To see the other types of publications on this topic, follow the link: Slope stability.
Dissertations / Theses on the topic 'Slope stability'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Slope stability.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Reeves, Bryan Anthony. "Slope stability radar /." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17049.pdf.
Full text
2
Peterson, Jennifer Lynn. "Probability analysis of slope stability." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=1070.
Full textAbstract:
Thesis (Ph. D.)--West Virginia University, 1999.Title from document title page. Document formatted into pages; contains viii, 91 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 63-64).
3
Wanstreet, Pinar. "Finite element analysis of slope stability." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5480.
Full textAbstract:
Thesis (M.S.)--West Virginia University, 2007.Title from document title page. Document formatted into pages; contains xii, 86 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 80-82).
4
Norris, J. E. "Root mechanics applied to slope stability." Thesis, Nottingham Trent University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505575.
Full text
5
Gogo-Abite, Ikiensinma. "SLOPE STABILITY OF LATERITE SOIL EMBANKMENTS." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3487.
Full textAbstract:
Embankments are key elements in the infrastructural development of structures such as dams, bridges, and roads. Residual soils are generally used as fills in the construction of embankments in areas were residual soils such as laterite is the dominant soil types. Laterite soils have the characteristics of losing its shear strength with time and in fully saturated conditions and its properties varies from region to region. The soil property is influenced by the chemical composition and the environment. The binding agent iron oxide in such soils changes its composition with time and in the presence of moisture. Sudden failures of embankments founded of laterite soils which were, otherwise, checked and found to be safe with high factor of safety, have been observed. This study is performed to investigate the stability of embankments with sudden loss of strength with time and when it is fully saturated. The research includes an investigation of the properties of laterite soils around the world, with particular emphasis on Nigeria. Initially, information is gathered from different sources about the strength-based properties of such soils. Previous research in Nigeria is used as a basis for obtaining real-world soil data. Next, stability analyses are performed using SLOPE/W with shear strength parameters for total stress (short-term), effective stress (long-term), and fully saturated soil conditions. A probability analysis is conducted for the fully saturated conditions because of the variability in the input parameters. Three slope configurations (1:1, 2:1, and 3:1) are considered. The study revealed that the laterite soils embankments lose most of its stability over time period and in full saturation soil conditions. Both these conditions significantly compromise the strength of the soil and the related stability of slopes. To consolidate all information, a database of the properties of laterite soils in some localities of Nigeria was created on the geographic information system (GIS), in order provide a quick access to information on laterite soils in Nigeria.M.S.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Civil Engineering
6
Bakhtiari, Siamak. "Stochastic finite element slope stability analysis." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/stochastic-finite-element-slope-stability-analysis(c1b451d9-8bf6-43ff-9c10-7b5209fb45c1).html.
Full textAbstract:
In this thesis, the failures that occurred during the construction of the Jamuna Bridge Abutment in Bangladesh have been investigated. In particular, the influence of heterogeneity on slope stability has been studied using statistical methods, random field theory and the finite element method. The research is divided into three main parts: the statistical characterization of the Jamuna River Sand, based on an extensive in-situ and laboratory database available for the site; calibration of the laboratory data against a double-hardening elastoplastic soil model; and stochastic finite element slope stability analyses, using a Monte Carlo simulation, to analyse the slope failures accounting for heterogeneity. The sand state has been characterised in terms of state parameter, a meaningful quantity which can fully represent the mechanical behaviour of the soil. It was found that the site consists of predominantly loose to mildly dilative material and is very variable. Also, a Normal distribution was found to best represent the state parameter and a Lognormal distribution was found to best represent the tip resistance.The calibration of the constitutive model parameters was found to be challenging, as alternative approaches had to be adopted due to lack of appropriate test results available for the site. Single-variate random fields of state parameter were then linked to the constitutive model parameters based on the relationships found between them, and a parametric study of the abutment was then carried out by linking finite elements and random field theory within a Monte Carlo framework.It was found that, as the degree of anisotropy of the heterogeneity increases, the range of structural responses increases as well. For the isotropic cases, the range of responses was relatively smaller and tended to result in more localised failures. For the anisotropic cases, it was found that there are two different types of deformation mechanism. It was also found that, as the vertical scale of fluctuation becomes bigger, the range of possible structural responses increases and failure is more likely. Finally, it was found that the failed zones observed during the excavation of the West Guide Bund of the Jamuna Bridge Abutment could be closely predicted if heterogeneity was considered in the finite element analyses. In particular, it was found that, for such a natural deposit, a large degree of anisotropy (in the range of 20) could account for the deformation mechanisms observed on site.
7
Wei, Yukun. "Slope stability assessment through field monitoring." Thesis, KTH, Jord- och bergmekanik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-239955.
Full textAbstract:
Deterministic methods have been used in geotechnical engineering for a long period, such as slope stability calculations. However, only applying deterministic methods is subjective and imperfect. There is a demand to develop a systematic methodology to link the assessed slope stability and field measurement data, which is also known as inverse analysis and forward calculation. Based on the Nya Slussen project, this thesis includes the development of a methodology, deterministic calculation for 4 cross sections using finite element program Plaxis 2D and probabilistic calculation for one section. Deterministic analyses showed satisfying results for all the studied cross sections since their factors of safety exceeded the minimum requirement. In probabilistic design, three parameters were found to have the most uncertainties through sensitivity analysis (undrained shear strength of clay, Young’s modulus of clay and friction angle of fill). Inverse analysis was done by testing different values of them in Plaxis and to try to match the displacement components provided by field measurement. After finding the best optimization for all the parameters, forward calculation gave a final factor of safety. It is suggested that both of the methods should be utilized together for better assessment.
8
Firat, Seyhan. "Critical assessment of existing slope stability formulae and application to slope stabilisation." Thesis, University of South Wales, 1998. https://pure.southwales.ac.uk/en/studentthesis/critical-assessment-of-existing-slope-stability-formulae-and-application-to-slope-stabilisation(339ddd93-e0c1-466d-8278-143beca4fb20).html.
Full textAbstract:
In this research, extensive use has been made of limit equilibrium methods of analysis for studying the stability of slopes. For the determination of the factor of safety (FOS) of slopes, the usual two-step process has been adopted; (a) assuming a slip surface for the soil mass, and (b) using the appropriate limit equilibrium equation(s). Eight wellknown limit equilibrium methods have been programmed to calculate different FOS values. The comparative performance of the various analyses has been carried out successfully using case studies. The innovative use of Gauss quadrature to calculate the FOS values has been shown to reducet he iterative sequencesd ramatically with no loss of accuracy. A visco-plastic flow model has been proposed to estimate lateral forces on piles used for slope stabilisation. The present research data occupies an "in-between" position to the previously reported values, with the variation trend being confirmed satisfactorily in all cases. Slope stabilisation due to the presence of a row of piles has been investigated using two distinct lateral load estimations. These include theories of plastic deformation and the proposed visco-plastic flow which are modelled and implemented in a computer program. Eight well-known methods of slope stability analyses have been adopted and computer coded to re-calculate FOS values for a slope reinforced by a row of piles. A Finite Element computer program has been developed to evaluate the displacement, bending moment and shear force along the pile axis. The pile is analysed at two levels above and below the slip failure surface.
9
何旅碧 and Lui-pik Pinky Ho. "Effectiveness of horizontal drains in slope stability." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40722375.
Full text
10
Liu, Ying, and 劉影. "Limit equilibrium methods for slope stability analysis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B42576684.
Full text
11
Brown, D. J. "An expert system for slope stability assessment." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381202.
Full text
12
GUEDES, MARIA CECILIA SAFADY. "DISCUSSION ON PROBABILISTIC ANALYSIS OF SLOPE STABILITY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1997. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1924@1.
Full textAbstract:
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIORSão abordados alguns aspectos relativos à execução de análises probabilísticas em projetos de geotecnia. Apresenta-se um resumo dos conceitos de probabilidade e estatística, utilizados ao longo do trabalho. Descreve-se uma metodologia para a obtenção dos dados necessários à análise probabilística, incluindo a quantidade e a localização de amostras, o cálculo das médias e variâncias dos parâmetros do solo e a quantificação das incertezas relativas a estes valores. Apresenta-se o procedimento de execução dos três métodos probabilísticos mais utilizados em geotecnia com ênfase especial para o Método do Segundo Momento de Primeira Ordem. São executadas análises probabilísticas considerando, separadamente, variações de altura e inclinação de um talude de mineração sob condições drenadas. Avalia-se também a aplicação da metodologia de análise probabilística em situações não-drenadas, através da análise da estabilidade de um quebra-mar sobre argila mole.
Some aspects about probabilistic analysis of stability in geotechnical engineering are studied in this thesis. A summary about basic concepts of probability and statistics used along this work is presented. The methodology for obtaining the data needed for probabilistic analysis is described, including quantity and localization of samples, computation of mean and variance of soil properties and determination of uncertainties about these values. The procedures of three probabilistic methods which are useful in geotechnics are presented, with special emphasis on the first order second moment method (FOSM). Probabilistic analysis are made considering independent changes of height and inclination of a mine slope under drained conditions. The application of probabilistic analysis of a breakwater above a soft clay deposit under undrained conditions is also presented.
Se abordan algunos aspectos relativos a la ejecución de análisis probabilístico en proyectos de geotecnia. Se presenta un resumen de los conceptos de probabilidades y estadísticas, utilizados a lo largo del trabajo. Se describe una metodología para la obtención de los datos necesarios para el análisis probabilístico, incluyendo la cantidad y la localización de las muestras, el cálculo de las medias y variancias de los parámetros del suelo y la cuantificación de los errores relativos a estos valores. Se presenta el procedimientode ejecución de los tres métodos probabilísticos más utilizados en geotecnia con énfasis especial para el Método del Segundo Momento de Primer Orden. Se realizan análisis probabilísticos considerando, separadamente, variaciones de altura e inclinación de un talud de mineración en condiciones drenadas. También se evalúa la aplicación de la metodología de análisis probabilística en situaciones no-drenadas, a través de el análisis de la estabilidad de un quebra olas sobre arcilla blanda.
13
SANDOVAL, MARTIN ALEXANDER PURIZAGA. "DETERMINISTIC AND PROBABILISTIC ANALYSIS OF SLOPE STABILITY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=21816@1.
Full textAbstract:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
Na abordagem determinística compara-se o método do equilíbrio limite com o método dos elementos finitos na análise 2D da estabilidade de taludes em solo, determinando-se o valor do fator de segurança para vários exemplos de aplicação. No método dos elementos finitos quantifica-se a região da potencial superfície de ruptura que se comporta sob extensão, analisando-se a ocorrência de anisotropia de resistência ao longo da potencial superfície de deslizamento para situações envolvendo diferentes tipos de solo, ângulos de inclinação do talude e sequências de escavação. Conclui-se que o efeito da anisotropia é pouco significativo quando o ângulo de atrito do solo exceder a 10 graus. Por outro lado, devido à crescente aplicação da abordagem probabilística na prática da engenharia geotécnica, foram realizadas análises de confiabilidade de taludes empregando os métodos de Monte Carlo, do hipercubo latino e o método das estimativas pontuais alternativas, comparando-se os diferentes resultados obtidos e discutindo as principais vantagens da aplicação destes métodos.
In the deterministic approach the limit equilibrium method and the finite element method are compared for 2D analysis of soil slope stability, calculating the value of the safety factor in several numerical examples. In the finite element method the region of soil under strain extension is determined and the occurrence of strength anisotropy is investigated along the potential sliding surface for situations involving different types of soil, angles of slope inclination and excavation sequences. It is concluded that the effect of the anisotropy is negligible when the angle of friction is higher than 10 degress. Moreover, due to the increasing application of the probabilistic approach in the practice of geotechnical engineering, some reliability analyses were carried out using the Monte Carlo method, the Latin hypercube method and the method of alternative point estimates, comparing their different outputs and discussing the main advantages of their application in the analysis of soil slope stability problems.
14
VECCI, ANDREA NASCIMENTO. "PROBABILISTIC ANALYSIS OF A MINE SLOPE STABILITY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35100@1.
Full textAbstract:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
FUNDAÇÃO DE APOIO À PESQUISA DO ESTADO DO RIO DE JANEIRO
PROGRAMA DE EXCELENCIA ACADEMICA
BOLSA NOTA 10
Na prática geotécnica, a estabilidade de taludes é atualmente estudada apenas com análises determinísticas, obtendo-se o valor do Fator de Segurança (FS) da estrutura geotécnica. Estas análises são simplificadas, pois fornecem valores de FS sem considerar a variabilidade intrínseca dos solos e rochas. Desprezar as incertezas dos parâmetros geotécnicos pode levar a resultados pouco confiáveis sobre a segurança de taludes. Análises fundamentadas em conceitos estatísticos, chamadas probabilísticas, passam ser mais frequentes na geotecnia por permitirem considerar efeitos da variabilidade inerente aos materiais. Estas análises incorporam elementos estatísticos que possibilitam tratar FS como uma função e estudar suas propriedades. Como resultados finais, os métodos probabilísticos fornecem o índice de confiabilidade (beta) e a probabilidade de ruptura (Pr) da estrutura averiguada. Este trabalho aplica análises determinísticas e probabilísticas de um talude de 200m de altura da Mina do Cauê, Itabira, MG. A estabilidade do talude foi analisada por cinco métodos determinísticos usuais e três probabilísticos (FOSM, EP e MC). Os resultados indicam que a fixação da superfície crítica de ruptura fornece, em geral, valores de beta e Pr semelhantes aos obtidos quando a superfície pode variar livremente. Com a superfície crítica fixa observou-se, também, que os resultados de beta e Pr do talude variam significativamente com o método de equilíbrio limite adotado. Após comparação dos resultados, pode-se recomendar o uso de análises probabilísticas FOSM com base no método de Morgenstern-Price em análises semelhantes ao caso estudado.
In current geotechnical practice, slope stability assessments are usually carried out only based on deterministic methods, obtaining a value of Safety Factor (FS). These analyses are simplified because the FS values do not consider the natural variability of soils and rocks. Disregarding the uncertainties inherent to geotechnical parameters may lead to unreliable results of slope safety. Probabilistic analyses, based on statistical concepts, have become more frequent in geotechnical practice, as they allow incorporating the materials intrinsic variability. These analyses are based on statistical elements that allow treating the FS as a function and studying its properties. The probabilistic methods indicate the reliability index (beta) and the probability of failure (Pr) of the verified geotechnical structure. This work presents deterministic and probabilistic analyses of a 200m high slope at the Cauê Mine, located in Itabira, Minas Gerais, Brazil, with basis on five usual deterministic methods and three probabilistic techniques (FOSM, Point Estimates and Monte Carlo). The results indicate that fixing the critical deterministic surface generally gives values of beta and Pr similar to those achieved when the surface is free to vary. It was also concluded that, with a fixed critical surface, beta and Pr results change significantly, when different Limit Equilibrium methods are adopted. It is recommended to use probabilistic FOSM analysis with Morgenstern and Price stability method in analyses similar to the one presented herein.
15
Howdyshell, James Robert. "Strain Compatibility Analysis in Slope Stability Modeling." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269113810.
Full text
16
Ho, Lui-pik Pinky. "Effectiveness of horizontal drains in slope stability." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40722375.
Full text
17
Chandler, Douglas Scott. "An area approach to forest slope stability /." Thesis, Connect to this title online; UW restricted, 1992. http://hdl.handle.net/1773/10181.
Full text
18
Liu, Ying. "Limit equilibrium methods for slope stability analysis." Click to view the E-thesis via HKUTO, 2002. http://sunzi.lib.hku.hk/hkuto/record/B42576684.
Full text
19
Azimi, Seyed Reza. "Soil Slope Stability Techniques: A Comprehensive Analysis." Thesis, Curtin University, 2016. http://hdl.handle.net/20.500.11937/53048.
Full textAbstract:
The slope failure is a dangerous phenomenon for natural or man-made slopes. Such failures can be assess by different numerical or limit state methods. However, other new techniques can be utilized to simulate the slope failures in more effective ways in order to save the construction costs. In this research, a model based on particle image velocimetry is developed to analyze the behavior of slope stability. This method provide real time safety factors and instantaneous velocities of slope movement which are applicable for shallow slope failure studies.
20
Tsaparas, Ilias. "Field measurement and numerical modelling of infiltration and matric suctions within slopes." Thesis, Durham University, 2002. http://etheses.dur.ac.uk/1715/.
Full text
21
Zhang, Lulu. "Probabilistic study of slope stability under rainfall condition /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202005%20ZHANG.
Full text
22
Sainak, Ala Naeem. "Three dimensional finite element analysis of slope stability." Thesis, Oxford Brookes University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320546.
Full text
23
Ojo, O. "Aspects of slope stability in opencast coal mining." Thesis, University of Leeds, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377864.
Full text
24
LOPEZ, CARLOS NACIANCENO MEZA. "PROBABILISTIC METHODS APPLIED TO SOIL SLOPE STABILITY ANALYSIS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=33136@1.
Full textAbstract:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
Comumente as análises de estabilidade de taludes são realizadas mediante métodos determinísticos, os quais visam o cálculo de um fator de segurança único assumindo os valores dos parâmetros de resistência como representativos e fixos. Estes métodos não conseguem avaliar as incertezas existentes nas propriedades do solo e tampouco indicam a proporção de influência que tem cada parâmetro de resistência no valor do fator de segurança. Os métodos probabilísticos, com base nas teorias de probabilidade, confiabilidade e estatística, permitem estimar a influência dessas incertezas nos cálculos determinísticos, com a possibilidade de prever mais amplamente o risco de insucesso associado a um projeto geotécnico de estabilidade de taludes. O presente trabalho estuda a aplicação de três métodos probabilísticos (Monte Carlo, Hipercubo Latino e Estimativas Pontuais Alternativas) na avaliação de estabilidade de taludes, com auxílio de métodos de equilíbrio limite no cálculo do fator de segurança. Com objetivo de inferir o impacto das variáveis aleatórias nas estimativas de probabilidade e confiabilidade, bem como da importância de uma quantificação adequada dos valores de desvio padrão, são realizadas comparações dos resultados obtidos com métodos probabilísticos e determinísticos (método das fatias, método dos elementos finitos) discutindo as principais vantagens, dificuldades e limitações nas aplicações dos mesmos em problemas de estabilidade de taludes de solo.
Slope stability analyses are usually carried out using deterministic methods, which aim the calculation of a single safety factor assuming the values of the shear strength parameters as representative and fixed. These methods fail to assess the uncertainties in soil properties and do not indicate the proportion of influence that each resistance parameter has on the final value of the safety factor. The probabilistic methods, based on probability, reliability and statistical theories, allow the estimation of the influence of these uncertainties on the deterministic calculations, with the possibility to broadly predict the risk of failure associated with a geotechnical slope stability project. This dissertation studies the application of three probabilistic methods (Monte Carlo, Latin Hypercube, and Alternative Point Estimates) in the evaluation of slope stability, with aid of limit equilibrium methods for the calculation of safety factors. In order to infer the impact of random variables on the estimates of probability and reliability, as well as the importance of an adequate quantification of the standard deviation values, comparisons are made among the results obtained with probabilistic and deterministic methods (limit equilibrium method, finite element method), discussing the main advantages, difficulties and limitations in their application to soil slope stability problems.
25
DAVILA, ANGEL MAURICIO JAIME. "NUMERICAL ANALYSIS OF BAMBOO PILES FOR SLOPE STABILITY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35682@1.
Full textAbstract:
O crescimento populacional descontrolado e o desenvolvimento urbano desordenado têm testemunhado danos severos em assentamentos humanos no mundo. Fenômenos naturais extremos, como consequência de uma mudança climática abrupta, como o intenso aumento do índice pluviométrico, provocaram incidentes de deslizamentos de taludes que dificilmente seriam ignorados desde as últimas décadas. Pilhas feitas de materiais convencionais como a madeira, aço e concreto têm sido tradicionalmente utilizados para a estabilização de taludes, com a finalidade de evitar incidentes de desabamentos de aterros. O presente trabalho estuda o uso de um material não convencional, o bambu da espécie Dendrocalamus Giganteus (DG) para estabilidade de taludes, como uma alternativa de material para pilha mais amigável ao ambiente graças a sua disponibilidade geográfica e capacidade de absorção de gases de efeito estufa. Suas dimensões e mais importantes suas propriedades mecânicas, são totalmente compatíveis com as de um elemento de estaca estabilizadora de taludes. Uma análise do Método dos Elementos Finitos (FEM) foi desenvolvida no software PLAXIS para testes em 2 e 3 dimensões. Usando um modelo de encosta instável reforçada com estacas de bambu para observar a interação do solo-estaca e avaliar o fator de segurança
(FS). Os resultados mostraram que as capacidades das pilhas de bambu são uma alternativa promissora para a estabilidade de taludes.Uncontrolled population growth and disorderly urban development had witnessed severe human settlement damages worldwide. Extreme natural phenomena consequence of abrupt climate change such as intense rainfall index increment had provoked landslides incidents hardly to ignore since last decades. Piles made of conventional materials such as timber, steel and concrete have traditionally been used for slope stabilization in order to prevent landslides incidents. The present paper studies the use of a non conventional material, the bamboo of the Dendrocalamus Giganteus (DG) species as bamboo-pile for slope stability, to become a more environmental friendly pile material alternative. Its dimensions and more important its mechanical properties, besides its geographical availability and greenhouse gases absorbing capabilities totally matches for an ecologic slope stabilizing pile element. Finite Element Method (FEM) analysis of bamboo-pile was developed on PLAXIS software for 2 and 3 dimensional tests. An unstable slope model condition was reinforced with bamboo-piles to observe the soil-pile interaction and evaluate the safety factor (SF). The results showed that the capabilities of the bamboo-piles are a promising alternative for slope stability.
26
Albataineh, Nermeen. "SLOPE STABILITY ANALYSIS USING 2D AND 3D METHODS." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1153719372.
Full text
27
Armstrong, Robert Claude 1961. "Slope stability modelling at the Cyprus Bagdad Mine." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/281472.
Full textAbstract:
The Bagdad Mine, an open pit mine located in northwestern Arizona, has experienced a slope failure related to a weak weathered tuff bed. The unit has been altered to a clay-like material in areas of the pit. Overburden pressures have caused the tuff to be squeezed out, and blocks of the overlying basalt unit have toppled forward. The failure has been remedied by reducing the pit slope to about 20°, but this solution is not desirable. Modelling of the slope is done using a general purpose finite element method program. The Drucker-Prager theory is used to model the tuff bed, while the other units are treated as being linearly elastic. Material properties for the three rock units are obtained from a variety of sources. Results suggest that loss of shear strength in the tuff, due to blasting-induced liquefaction, may be the cause of slope failure. Suggestions are made for remedial action.
28
Visconty, Greg. "Rock slope stability studies in Siskiyou National Forest." PDXScholar, 1988. https://pdxscholar.library.pdx.edu/open_access_etds/3903.
Full textAbstract:
The line mapping method of Piteau and Martin (1977) was tested on two different rock type road cuts in the Siskiyou National Forest, and was found to be an efficient means of collecting geological data for rock slope stability analysis. The unbiased approach of this method calls for close scrutiny of the outcrops in question, covering more ground than other methods in less time. In turn, this close attention to every crack in the outcrop reveals more about the stability of the slope, and can reveal hidden hazards of rock fall.
The supportive systems for analyzing the data - stereonets and computer program packages of Watts (1986) - led to the discoveries of several potential plane and wedge failures which were not initially visible. Also revealed was the fairly stable condition of the massive wedge at Elk River, which appeared to be extremely hazardous.
Each potential failure was analyzed for its Factor of Safety under dry and water saturated conditions, and the cohesion necessary to maintain stability was reported.
29
Rashed, Azadeh <1983>. "A New Prediction Model for Slope Stability Analysis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6628/1/Doctoral_Thesis-_A_New_Prediction_Model_for_Slope_Stability_Analysis.pdf.
Full textAbstract:
The instability of river bank can result in considerable human and land losses. The Po river is the most important in Italy, characterized by main banks of significant and constantly increasing height. This study presents multilayer perceptron of artificial neural network (ANN) to construct prediction models for the stability analysis of river banks along the Po River, under various river and groundwater boundary conditions. For this aim, a number of networks of threshold logic unit are tested using different combinations of the input parameters. Factor of safety (FS), as an index of slope stability, is formulated in terms of several influencing geometrical and geotechnical parameters. In order to obtain a comprehensive geotechnical database, several cone penetration tests from the study site have been interpreted. The proposed models are developed upon stability analyses using finite element code over different representative sections of river embankments. For the validity verification, the ANN models are employed to predict the FS values of a part of the database beyond the calibration data domain. The results indicate that the proposed ANN models are effective tools for evaluating the slope stability. The ANN models notably outperform the derived multiple linear regression models.
30
Rashed, Azadeh <1983>. "A New Prediction Model for Slope Stability Analysis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6628/.
Full textAbstract:
The instability of river bank can result in considerable human and land losses. The Po river is the most important in Italy, characterized by main banks of significant and constantly increasing height. This study presents multilayer perceptron of artificial neural network (ANN) to construct prediction models for the stability analysis of river banks along the Po River, under various river and groundwater boundary conditions. For this aim, a number of networks of threshold logic unit are tested using different combinations of the input parameters. Factor of safety (FS), as an index of slope stability, is formulated in terms of several influencing geometrical and geotechnical parameters. In order to obtain a comprehensive geotechnical database, several cone penetration tests from the study site have been interpreted. The proposed models are developed upon stability analyses using finite element code over different representative sections of river embankments. For the validity verification, the ANN models are employed to predict the FS values of a part of the database beyond the calibration data domain. The results indicate that the proposed ANN models are effective tools for evaluating the slope stability. The ANN models notably outperform the derived multiple linear regression models.
31
McColl, Samuel Thomas. "Paraglacial Rockslope Stability." Thesis, University of Canterbury. Department of Geological Sciences, 2012. http://hdl.handle.net/10092/7331.
Full textAbstract:
The aim of this research was to study the relationship between rock slope stability and glacial processes. An in-depth analysis of our current understanding of how glaciated rock slopes develop instability and movement during deglaciation is presented; this shows that understanding is incomplete without an appreciation of the variable mechanical behaviour of glacier ice. In this thesis, I argue that:
(1) The ductile behaviour of ice at low strain rates allows movement of rock slopes buttressed by ice. Field evidence and simple force models are used to explore rate of movement of ice-contact slopes and the conditions under which they evolve. The results indicate that large rockslides can move and deform glacial ice at rates of 10-2 to 102 m-yr. This implies that ice-contact slope movement may be important for slope evolution and the erosion and entrainment processes of glaciers; and
(2) the elastic strength of glacier ice at the high strain rates associated with seismic shaking enables ice to modify the response of the surrounding rock to seismic shaking. To explore this, numerical analyses of the interaction between glacial erosion, glacier mass, topography, and earthquake shaking intensity are undertaken. Shaking of mountains of variable shape and with different levels of ice inundation is simulated using FLAC 6.0. The results suggest that complete inundation by ice can significantly reduce shaking intensity. This, in combination with glacial steepening of slopes, may make recently deglaciated slopes more prone to coseismic failure.
In the final chapter of the thesis, I present a conceptual model of the evolution of slope stability during stages of glaciation and deglaciation. The model incorporates the ideas presented in the thesis. I then offer recommendations for how our understanding of these processes can be further advanced.
32
Awad, Barre Mohamed 1955. "APPLICATION OF THE SIMPLEX METHOD TO SLOPE STABILITY ANALYSIS." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276340.
Full text
33
Arnold, Patrick. "Probabilistic modelling of unsaturated slope stability accounting for heterogeneity." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/probabilistic-modelling-of-unsaturated-slope-stability-accounting-for-heterogeneity(fb3d214c-8a42-4a2c-81c2-bda45e9ae7af).html.
Full textAbstract:
The performance and safety assessment of geo-structures is strongly affected by uncertainty; that is, both due a subjective lack of knowledge as well as objectively present and irreducible unknowns. Due to uncertainty in the non-linear variation of the matric suction induced effective stress as a function of the transient soil-atmosphere boundary conditions, the unsaturated state of the subsoil is generally not accounted for in a deterministic slope stability assessment. Probability theory, accounting for uncertainties quantitatively rather than using "cautious estimates" on loads and resistances, may aid to partly bridge the gap between unsaturated soil mechanics and engineering practice. This research investigates the effect of uncertainty in soil property values on the stability of unsaturated soil slopes. Two 2D Finite Element (FE) programs have been developed and implemented into a parallelised Reliability-Based Design (RBD) framework, which allows for the assessment of the failure probability, failure consequence and parameter sensitivity, rather than a deterministic factor of safety. Utilising the Random Finite Element Method (RFEM), within a Monte Carlo framework, multivariate cross-correlated random property fields have been mapped onto the FE mesh to assess the effect of isotropic and anisotropic moderate heterogeneity on the transient slope response, and thus performance. The framework has been applied to a generic slope subjected to different rainfall scenarios. The performance was found to be sensitive to the uncertainty in the effective shear strength parameters, as well as the parameters governing the unsaturated soil behaviour. The failure probability was found to increase most during prolonged rainfall events with a low precipitation rate. Nevertheless, accounting for the unsaturated state resulted in a higher slope reliability than when not considering suction effects. In a heterogeneous deposit failure is attracted to local zones of low shear strength, which, for an unsaturated soil, are a function of both the spatial variability of soil property values, as well as of the soil-water dynamics, leading to a significant increase in the failure probability near the end of the main rainfall event.
34
Momand, Farid A. "Monitoring Slope Stability Problems Utilizing Electrical and Optical TDR." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1289317906.
Full text
35
Tanser, Daniel John. "Simulation of a slope stability radar for opencast mining." Master's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/6055.
Full text
36
kumar, B. prithiraj amitesh. "Dump slope stability analysis." Thesis, 2013. http://ethesis.nitrkl.ac.in/4878/1/109MN0606.pdf.
Full textAbstract:
In this modern world mining has become an integral part of our life. Mining activities effect in generation of both economic and noneconomic materials. The noneconomic materials are stored at selected places known as waste dumps. The stability of the waste dump has been of a matter of great concern over the years. The problems increases with limiting availability of land. In this project work the slope stability analysis is carried out for the waste dump of a selected iron ore open cast mine. In this process samples are collected and tests are carried out on these samples to get different geotechnical parameters. The factor of safety of different sections of the existing design of the selected mine are calculated by the help of GALENA software. In the end new design of dump slope are proposed by optimising the bench dimensions and material properties by the help of back analysis of GALENA. Then conclusion and various recommendation are given on the basis of new design of the dump slope.
37
Kung, Johnson, and 拱祥生. "Rain-Induced Slope Stability of Unsaturated Soil Slope." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/81992360256245498790.
Full textAbstract:
碩士國立臺灣科技大學
營建工程系
87
Classic soil mechanics has focused on the behavior of saturated soils. The shortcomings associated with classical soil mechanics are the lack of consideration of the behavior of unsaturated soils and the missing of a model for the moisture flux boundary condition imposed by climate conditions. However, many geotechnical problems involve unsaturated soils above the groundwater table. The objective of this research is to apply the principle of the unsaturated soil mechanics to study the rain-induced slope stability of unsaturated soil slope. This study has developed a set of the unsaturated soil triaxial apparatus which can conduct a series of the shear strength test of unsaturated soils. Considering the characteristics of unsaturated soils, slope stability analyses were carried out for the Linkou lateritic terrace. The results are as follows:（1）matric suction increases the shear strength of unsaturated soils and thus increase the factory of safety of the slope stability in the dry season; （2） rain infiltration results in the forming of a wetting band and reduction of matric suction, consequently, decreases the apparent cohesion of the unsaturated soil. Then, a shallow-type of failure would take place within the wetting zone. This study shows that slope surface protection that can prevent rain infiltrating is more effective than the horizontal drains for the unsaturated soil slope. Rain infiltration may saturate soil and decrease the apparent cohesion of unsaturated soil. Consequently, the slope may become unsable. The most effective way to prevent failure of unsaturated soil slope appears to be to protect the slope surface from excessive rain infiltration.
38
Guo, Jun-Her, and 郭俊何. "Studies of the Slope Stability for Dip-Slope Development." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/50608608723855091205.
Full textAbstract:
碩士國立臺灣科技大學
營建工程系
88
The development of slope communities is more complex than plain communities. The engineering influential factors for slope development includes the material properties, planning and designing consideration, groundwater treatment and erosion protection etc. The geological structure plays a key role for designing and construction. To achieve the aim of safety and economic for slope development, a better understanding how these engineering factors will influence is needed. The research focuses on the slope stability of the dip-slope which is easy to find in western Taiwan. The bedding plane between sandstone and shale was simulated in the study. The code UDEC was used for numerical simulation to analyze the dip-slope stability under various combination of engineering factors. The influence factors of slope development included the slope and height of the cut, the dip angle and shear strength parameters of bedding plane, spacing of joints, groundwater elevation, unit weight of the geological material. This study results showed that the fiction angle and the joint dip were two major factors for controlling the stability for slope development. Groundwater level also made a significant influence on slope instability under the same stratum. The factor of safety could increase if the anchor was used. The monitoring of landslide can be tracing the slip along the bedding plane.
39
Liu, Kuan-Lin, and 劉冠麟. "Slope stability analysis under extreme rainfall in slate slope." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7e8yj9.
Full textAbstract:
碩士國立高雄第一科技大學
營建工程系碩士班
106
With global warming and climate change issues, extreme rainfall events in the future may become the normal, causing severe disaster events will be more frequent. During the rainy season such as typhoon and heavy rain, severe rainfall often induces more serious slope disasters. Analysis of the devastating heavy rainfall in Taiwan in the past two decades, the occurrence of slope disasters is mostly caused by "excessive continuous rainfall" or "short-duration rainfall". For mild metamorphic slate, its erosion resistance is higher than that of mud or shale. However, the slate is easily split along its cleavage direction and turned into a finely- cut sheet. When subjected to long-term gravity and weathering, the material of shale will gradually become weaken and turn into creep. That is, during the deformation process of slate slope, joint fissures will gradually grow out. When the rainfall infiltration leads to groundwater level rise, the possibility of rock debris collapse will increase. In this study, high- risk areas with deep collapse were selected for analysis, taking Songmao Landslide area in Lishan District and Sinsing Landslide area in Jinfeng Township, Taitung County as examples. To simulate groundwater level rise caused by rainfall, this study conducted SEEP/W module of GeoStudio numerical software. The groundwater level monitoring data will be used for verification. Then, the SLOPE/W module of GeoStudio numerical software is used for slope stability analysis. Exploring the relationship between groundwater level rise and safety factor of slope is one of the main task in this study. The uncertainty of rainfall caused by extreme weather is researched herein. In this study, the design of rainfall patterns such as advanced, intermediated, delayed and uniform rainfalls models were simulated. This study tried to establish a deep- seated landslide disaster warning system. After simulation analysis and verification, the relationship between rainfall duration and accumulated rainfall and the relationship between the maximum groundwater level cumulative rainfall and water level elevation were proposed as the evaluation criteria. The relevant research results are as follows: (1) Relationship between rainfall duration (X) and cumulative rainfall (Y): When FS=1.05 of Songmao Landslide area, the upper bound is Y=-7.221*X+1844.052, and the lower bound Y=-7.221 *X+1630. The FS=1.0 of Sinsing Landslide area, Y=0.35*X+371.98; when FS=1.05, Y=0.021*X+143.56. (2) Relationship between cumulative rainfall at the highest groundwater level (X) and rise of groundwater level (Y): In Songmao Landslide area, the relationship of cumulative rainfall at the highest groundwater level and rise of groundwater level is Y=0.00387*X; and when Y=3m, FS=1.05; Y=6m, FS=1.0. In Sinsing Landslide area, the relationship is Y=0.00789*X; and when Y=1.0m, FS=1.05; Y=3.87m, FS=1.0.
40
Bijoy, A. C. "Comparative Studies On Slope Stability Analysis." Thesis, 1999. https://etd.iisc.ac.in/handle/2005/1603.
Full text
41
Bijoy, A. C. "Comparative Studies On Slope Stability Analysis." Thesis, 1999. http://etd.iisc.ernet.in/handle/2005/1603.
Full text
42
CHANDRA, MOHIT. "NUMERICAL MODELLING ON SLOPE STABILITY." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15085.
Full textAbstract:
In this study our aim is to carry out the analysis of slope stability of a man made slope by
using PLAXIS software. The program provides a convenient graphical user interface that
enables a quick generation of geometry model. The slope stability analysis consists
determining the soil properties, the shape and the position of possible failure surface. The
physical properties of soil used in model testing are evaluated from laboratory
experiments and numerical simulation of physical model of slope. The study consists to
determine the failure surfaces and corresponding factor of safety.
To determine FOS of a specified slope is highly dependent on the method of analysis
used. As geotechnical engineer, it is a challenge to decide that which method can simulate
better results. This thesis is limited to staged construction slope model and all the studied
cases are taken from past researches that have been done all over the world.
43
Chang, Shih-Hao, and 張世豪. "Numeric Analysis of Slope Stability at an Open Cut Slope." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/uwetzr.
Full textAbstract:
碩士國立臺北科技大學
土木與防災研究所
99
The staggering price of a property in urban Taipei results in high efficiency of land use and extreme density of buildings. In light of the proximity of the foundations of most buildings to other buildings or underground utility and considering the soft and weak clay underlying the geologic formation of Taipei Basin, diaphragm wall is the preferred construction method for deep excavations, as to prevent inclining of or damage to neighboring structures due to soil decompression, excessive lateral displacement or ground settlement. Open cut slope is rarely seen as the foundation excavation method of choice in Taipei Basin. An open cut slope excavation at a site located in the Keelung River K1 zone north of Keelung River and south of Tatun volcano group was studied. PLAXIS, a 2D finite element analysis program, was combined with jobsite observation data for comparison and verification. With the comparison result mentioned above, the effects of changes in the depth of bedrock at the studied jobsite to the failure surface of the excavation were investigated. The predominant control factors were explored to find out the influence of these factors to the soil slide through the simulation of PLAXIS with the penetration depth of soldier piles, groundwater table and the location of strutting as the variables.
44
Liao, Wei-Chin, and 廖偉欽. "Reliability Design for Rock-slope Stability." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/76530721827644340211.
Full textAbstract:
碩士國立交通大學
土木工程學系
99
This thesis explores the methodology of reliability design for rock-slope stability involving the plane-slide and rock-soil-interface slide mechanisms. Conventional slope stability design based on factor of safety does not necessarily provide a consistent probability of failure. The applicability of the first, second and third level of reliability design on rock-slope stability problems was studied; the accuracy and relative simplicity of these methods were compared. This study attempted to promote the reliability design in geo-engineering practices. For the plane-slide failure mechanism, the aim is to develop a methodology for the calibration of the required partial factors in LRFD, applicable in code calibration in the future. The partial factors were calibrated against target reliability. First, the reliabilities of various cases were adjusted to the target reliability by the second level reliability method, AFOSM. Next, the partial factors for the first level reliability method, LRFD, were calibrated. After that, the consistency of reliability by LRFD was verified by the third level reliability method, the Monte Carlo Simulation. For the rock-soil-interface slide mechanism, three types of slice methods, including the conventional slice method, the simplified Bishop method and the wedge method, were implemented. The probability of failure was analyzed by the Monte Carlo Simulation and AFOSM to examine the characteristics of failure mode and the sensitivity of parameters, and to compare the accuracy and simplicity of these reliability methods. This study reveals that the consistency of allowable risk can be achieved by using the parametric LRFD in routine designs for plane-slide mode. For the rock-soil-interface slide mode, the failure probability obtained by AFOSM and the Monte Carlo simulation are almost identical.
45
Lin, Chuan-Sheng, and 林泉盛. "Study of Slope Stability by Vegetation." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/88110448924570470632.
Full textAbstract:
碩士國立臺灣海洋大學
河海工程學系
92
Abstract The collapse of slope due to the internal and external factors, which complied with the geographical features that suited local circumstances, therefore, the slope protection becomes very important. The collapse of the partial road in the central Taiwan caused by 921 earthquakes in 1999, and vegetation on the landsides was destroyed seriously. Additional soil erosion and debris flow may happen when heavy raining or earthquakes if the slope is not protected. As a result, the affection of the transportation and tourism cause of the road interrupter. The collapse of slope became more steep cause by earthquake, downpour or road building, so some of traditional vegetation engineering methods can not be used on the slop. The purpose of this study was to evaluate the efficiency of several vegetation engineering methods, including 1.anchoring slop, 2.seeding with adhesive, and 3.directly spouting vegetation. Through testing with the different engineering methods at the same place, the obtained results showed the best average plant recovery was in directly spouting vegetation; for a steep slop, the best vegetation engineering methods was in square frame plots had highest resistance to soil erosion; for the uncovered land of rebuilding urgently, the best vegetation engineering methods was in directly spouting vegetation engineering methods had accelerate planet recovery; however the seeding with adhesive is economical. On the other hand, in order to realize the effect of the rebuilding collapse land and recovering slope and plant alternating, in addition to artificial rebuilding vegetation engineering mentioned above, the introduction of herbaceous and woody plant seeds to match up local soil can accelerate the plant succession and the restoration of landslides. By the usage of hydro seeding to protect the slope can speed the process of project and beautify the environment. Expecting a good protective effect on slope in the initial time of projecting depends much on the cohesive agent. This study uses Festura arundinacea, Chloris gavana Kunth, Bermuda grass, and Bahia grass, as the primary experimental plants to probe the cohesive agent affecting on protective effect of slope land surface and initial growth of plants of plants, expect to offer the reference in the hydro seeding project hereafter.
46
Li, Guang-Syun, and 黎光珣. "Effective Random Dimension in Slope Stability." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/51737708351606117917.
Full textAbstract:
碩士國立臺灣大學
土木工程學研究所
103
Reliability index is the index that considers the errors and uncertainties in the analysis. The Quantile Value Method (QVM) provides better accuracy to determine the reliability index in reliability analysis than partial factor design method and working stress analysis; have better efficiency than Monte-Carlo simulation. But when it comes to multivariate analysis, QVM method doesn''t perform stably. Ching et al. developed a new method called ''ERD-based QVM'', that combines the QVM’s efficiency and the MCS’s accuracy with Effective Random Dimension (ERD). The effective random dimension is an index that reflects how many random variables are really considered in the analysis. We expect using effective random dimension to connect the deterministic analysis and the probabilistic result. If we can form a complete mathematical model to describe the effective random dimension, we can back calculate the probabilistic solution from the only deterministic solution without doing Monti-Carlo simulation. The research is about the layered slope stability analysis. The undrained shear strength of each layer of soil is random. We use linear regression and the binary information criterion (BIC) on math model building and hope to find a appropriate combination of parameters to determine the effective random dimension.
47
郭 and 郭易方. "Uncertainty of slope stability analysis methods." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ez33q5.
Full textAbstract:
碩士國立中央大學
土木工程學系
105
The norms related to slope stability in Taiwan are generally based on the overall factor of safety, but the analysis process for safety factor is not required in detail. Whenever a disaster coming, it is easy to be controversial. Conventional limit equilibrium method for analysis can quickly get a potential surface and factor of safety. It’s still trusted by the engineering community. Engineers need to rely on their experience, because these methods of slices have different assumptions. In this paper, a series analysis for 43 cases by limit equilibrium method. Different commercial program, search method and method of slices are used to analyze simple slopes, natural slopes, and embankment dam. Points out the emphasis of the analysis process, and discusses the three factors that cause the uncertainty. The results show that the commercial program has the most significant effect on the analysis of the circular sliding surface, and search method is second. The influence of the slicing method is the most regular and predictable. When analyzing the non-circular surface, applicability of search methods and method of slices for the case needs to be considered.
48
Wang, Jun-Min, and 王竣民. "Rainfall Induced Unsaturated Slope Stability Analysis." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/nyt4hy.
Full textAbstract:
碩士國立臺灣大學
土木工程學研究所
107
Taiwan is a rainy country in the world. There is abundant rainfall all year. Rainfall is one of the main causes of mountain slope disasters. In recent years, the behavior of unsaturated soil has been incorporated into the slope stability analysis. The matric suction is present in the unsaturated soil, and it provides force to resist the sliding force. After consider matric suction, the factor of safety will be higher than that without considering the matric suction. In this study, PLAXIS 2D was used for slope stability analysis to investigate the influence of slope, fitting parameters of vG model, permeability coefficient and rainfall events on unsaturated slopes. Using the relationship between of the matric suction, factor of safety and failure surface to judge the difference of each soil parameters. According to the results, the wetting band is an important factor, it makes the matric suction of surface soil decrease rapidly, and the shear strength of soil is also decreases, which easily causes the slope to failure. At the rainfall event 3, if the permeability coefficient is large, the rainwater will flow to deeper soil and raise the groundwater level, and the saturation of the wetting band will be low relatively.
49
Mohanty, Anurag. "Slope Stability Analysis using Genetic Algorithm." Thesis, 2009. http://ethesis.nitrkl.ac.in/1038/1/final.pdf.
Full textAbstract:
Analysis of stability of slopes is of utmost importance as its failure may lead to loss of lives and great economic losses. Failure of a mass located below the slope is called a slide. It involves downward and outward movement of entire mass of soil that participates in failure. Slides may occur in almost nay conceivable manner slowly or suddenly, with or without apparent provocation. In the present day lots of methods are available to the modern engineer to obtain the stability of slopes. Some are quite rigorous, while some are expensive. In this project a comparative of study of such methods has been done with special stress on the application of GA in the analysis of slope stability.
50
Suman, Sandeep. "Slope Stability Analysis Using Numerical Modelling." Thesis, 2015. http://ethesis.nitrkl.ac.in/7065/1/Slope_Suman_2015.pdf.
Full textAbstract:
Stability analysis of slopes is a very important component of various opencast mining projects throughout the life cycle of the project. A failure of slope in the area being worked in a mine can lead to some severe social, economic as well as a great safety catastrophe. The basic failure conditions are very diverse & complicated. These failure mechanisms are greatly dependent on local geology, which are pretty unique to a specific location of the rock mass. In the recent years too, the method of designing slopes are completely based upon the field knowledge. Better approach can be made through safe designing of slopes. The aim of the project is to carry out numerical modelling for slopes having various dimensions and different rock properties. The numerical modelling is carried out using FLAC SLOPE for finding out the factor of safety. The parameters are varied for each slope and the factor of safety calculated for each step. These values are correlated with the bench parameters to find out how the factor of safety changes with changing parameters.