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Dissertations / Theses on the topic 'Fractures (geologic)'

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Published: 4 June 2021

Last updated: 4 February 2022

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1

Oxenstierna, Johan. "Remote Sensing and Statistical Analysis of Fracture Populations Around Lake Thingvallavatn, SW Iceland." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-182201.

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This study aims at a description and statistical analysis of tectonic and magmatic fractures in the Western Volcanic Zone (WVZ) on Iceland. Two fracture populations are studied with respect to their distance to the Hengill volcano: The southern area is between 0-10 kilometers from the volcano and the northern area is between 16-25 kilometers from the volcano. The description and analysis of fractures is carried out separately for the two areas as well as for the two areas together to test different mapping procedures, statistical methods and the influence of the volcano on the properties of th

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2

Reynolds, David A. "Multiphase flow and transport in fractured geologic environments." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ63448.pdf.

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3

Weatherington-Rice, Julie Bishop Paynter. "Fracture occurrence and ground water pollution potential in Ohio's glacial and lacustrine deposits: a soils, geologic, and educational perspective." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1072118096.

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4

Annewandter, Robert. "Discrete fracture and matrix simulation of C02-brine migration, hysteresis effect and capillary trapping in fractured geological formations." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/2945.

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Injection of supercritical CO2 allows us to sequester an important component of the greenhouse gases in the subsurface to reduce emissions of CO2 in the energy sector. In light of global environmental change, it is of utmost importance to reliably predict the fate and containment of injected CO2 at geological time scales. Therefore, modelling of the CO2 plume migration and its containment within geological carbon storage repositories helps to uncover and understand challenges arising during injection and post-injection phase. Discrete fracture and matrix (DFM) simulations have emerged as a pow

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5

Ivanova, Violeta Mintcheva. "Geologic and stochastic modeling of fracture systems in rocks." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/10025.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.<br>Includes bibliographical references (p. 365-370).<br>by Violeta Mintcheva Ivanova.<br>Ph.D.

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6

Rajeh, Tawfik. "Modeling flow in fractured geologic media : upscaling and application to deep geothermal reservoirs." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0051.

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Fractures dans les roches constituent un chemin préférentiel pour les écoulements et les transferts dans les milieux géologiques. Les roches poreuses fracturées se retrouvent dans diverses applications comme par exemple l’ingénierie pétrolière et gazière, le stockage géologique du CO2 et l’extraction d’énergie géothermique. Cette thèse de doctorat présente un ensemble d’analyses des propriétés géométriques, topologiques et hydrauliques des réseaux de fractures dans une perspective d’homogénéisation et d’application à la simulation numérique des réservoirs géothermique. La description des fract

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7

Lubbe, Rudi. "A field and laboratory investigation of the compliance of fractured rock." Thesis, University of Oxford, 2005. http://ora.ox.ac.uk/objects/uuid:699841b5-3f5f-4b04-8123-ec8912bdaf4a.

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Compressional and shear wave velocity and attenuation measurements were obtained in the laboratory from 50 mm diameter, cylindrical, limestone core samples over a confining pressure range of 5 – 60 MPa. Normal and tangential fracture compliance values, as a function of confining pressure, were calculated for a single fracture cut perpendicular to the long axis of the core. The ratio of the normal to tangential compliance was approximately 0.4 and was independent of the applied stress. Values of normal and tangential fracture compliance calculated were of the order 10<sup>-14</sup> m/Pa, and de

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8

Meyer, Thomas 1970. "Geologic stochastic modeling of rock fracture systems related to crustal faults." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9317.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.<br>Includes bibliographical references (p. 223-225).<br>In this study, the capabilities of the MIT three-dimensional geologic stochastic fracture model were extended so that fracture systems related to crustal faulting can be simulated. As presented here, the model comprises four stochastic processes: 1) a homogeneous, anisotropic Poisson process to model the orientation of the potential fracture planes according to an orientation distribution; 2) a homogeneous Poisson line process that te

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9

Hekmatnejad, Amin. "Geostatistical modeling of discrete fracture networks for geomechanical applications in heterogeneous fractured media based on the cox-boolean model." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/167753.

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Doctor en Ingeniería de Minas<br>La caracterización de fracturas es crítica en minería a cielo abierto y subterránea, así como en ingeniería geológica e ingeniería de petróleo, para comprender las propiedades mecánicas e hidráulicas del macizo rocoso. Dado que se observa una fracción muy pequeña de las fracturas en un área de estudio, no es aconsejable un modelo determinístico de la red de fracturas y, a menudo, es preferible un modelo estocástico. Esta tesis se centra en el llamado modelo Cox-Booleano de discos planos para describir redes de fracturas discretas, que se basa en la definición

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10

Shackleton, John Ryan. "Numerical Modeling of Fracturing in Non-Cylindrical Folds: Case Studies in Fracture Prediction Using Structural Restoration." Amherst, Mass. : University of Massachusetts Amherst, 2009. http://scholarworks.umass.edu/open_access_dissertations/82/.

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11

McBrearty, Daniel. "Fracture flow as influenced by geologic features in the Aberjona Valley, Massachusetts." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11813.

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12

Thornburg, Todd Mark 1955. "Electrical resistivity of unsaturated, fractured tuff: influence of moisture content and geologic structure." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/558137.

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13

Cantarero, Abad Irene. "Deformation-fluid multiphase interaction within the fractures of the Barcelona Plain and the Vallès Basin: influence on fault rocks and diagenesis / Interacció multifàsica entre deformació i fluids a les fractures del Pla de Barcelona i de la Conca del Vallès: influència en les roques de falla i en la diagènesi." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/110412.

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The faults limiting the Barcelona Plain and the Vallès Half-graben (Catalan Coastal Ranges, NE Spain) have allowed the study of a complex and multiphase tectonic/fluid history from the Hercynian to recent times. Furthermore, this study has allowed to define the factors that control the fluid regime and the fluid flow pathways through faults. A multidisciplinary methodology involving field and petrological observations and microstructural analyses combined with geochemical data has been used to characterize host rocks, fault rocks and fracture-related cements. Four tectonic events that e

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14

Prasad, Umesh. "Dynamic fracture characteristics of selected rocks." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36826.

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Fragmentation by blasting is distinct from other method of rock breakage due mainly to the short time scale involved in the application of stresses. In the present work, the dynamic rock properties, applicable to non-static fragmentation process have been measured and compared with measured values of other fracture related properties. Further, these are examined to establish correlation with respect to their physical, mineralogical and micro-structural characteristics. The rock types selected for the present work ranged from nearly homogenous isotropic rock to an-isotropic rocks. The nearly is

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15

Sun, Gexin. "Application of fracture mechanics to mine design." Thesis, University of Nottingham, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.480734.

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16

Rocchi, Valentina. "Fracture of basalts under simulated volcanic conditions." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270881.

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17

Spreafico, Margherita Cecilia <1984&gt. "Lateral spreading and associated slope processes in fractured rock slabs." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7180/.

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Landslides of the lateral spreading type, involving brittle geological units overlying ductile terrains, are a common occurrence in the sandstone and limestone plateaux of the northern Apennines of Italy. These instability phenomena can become particularly risky, when historical towns and cultural heritage sites built on the top of them are endangered. Neverthless, the mechanisms controlling the developing of related instabilities, i.e. toppling and rock falls, at the edges of rock plateaux are not fully understood yet. In addition, the groundwater flow path developing at the contact between t

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18

Millan, Cristina. "Syntectonic Fluid Flux in a Glaciated Rift Basin: Record from vein arrays in the AND-1B and AND-2A sedimentary rock cores, Victoria Land Basin, Antarctica." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366309725.

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19

Beaton, Danielle. "Drivers of Microbial Community Assembly within an Extent of Fractured Crystalline Rock Relevant to a Geologic Repository." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37942.

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The objective of this thesis was to characterize the microbiology of subsurface fracture water at a location within the Canadian Shield considered as a prospective host site for a geologic repository. Repository performance and long-term safety predictions for geologic confinement of radioactive waste rely on understanding the natural microbial processes that occur within a host formation; however, the inaccessibility of the crystalline terrestrial subsurface means that this habitat is difficult to explore and as such is largely unknown. The area characterized is located within the boundary

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20

Bui, Thang Dinh. "Neural network analysis of sparse datasets : an application to the fracture system in folds of the Lisburne Formation, northeastern Alaska /." Texas A&M University, 2004. http://handle.tamu.edu/1969.1/2593.

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21

Brush, Jennifer. "Faults and fractures in the Niobrara Formation of Wattenberg Field, Colorado." Thesis, Colorado School of Mines, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10128859.

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<p> Faults are an important element of reservoir characterization because they have the potential to compartmentalize a reservoir and create associated fractures that can profoundly influence fluid flow in the reservoir. This investigation describes details of the fault regime in a portion of the Wattenberg Field, Colorado. For the purposes of this study, seismic-scale faults are interpreted as horizons with displacements. Seismic-scale fractures are interpreted as linear amplitude discontinuities. Borehole image log scale faults show displacement. Borehole image log scale fractures do not sho

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22

Lee, Ji Soo. "Time-Dependent Crack Growth in Brittle Rocks and Field Applications to Geologic Hazards." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/193784.

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The primary focus of this research is to evaluate the time-dependent crack growth in rocks using lab tests and numerical modeling and its application to geologic hazard problems. This research utilized Coconino sandstone and Columbia granite as the study materials and produced the subcritical crack growth parameters in both mode I and II loadings using the rock materials. The mode I loading test employs three different types of fracture mechanics tests: the Double Torsion (DT), the Wedge Splitting (WS), and the Double Cantilever Beam (DCB) test. Each test measured the mode I crack velocity. Th

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23

Jim, Nilsson. "Fracture characterization in magmatic rock, a case study of the Sosa-dyke (Neuquén Basin, Argentina)." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-411548.

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There are many examples worldwide were fossil magmatic intrusions influence the local water and energy supply. Due to that intrusions can act as a conductor and a reservoir, but also as a barrier for fluids and gases in the ground. The decisive feature between conductor or barrier in an intrusion is its fracture network. Hence it is of paramount importance to characterize an intrusion’s fracture network and thus its permeability. However, other than through boreholes magmatic intrusions are rather inaccessible and very little is known about their influence on aquifers and reservoir rocks in th

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24

Diaz, General Elizabeth Noemi <1984&gt. "The Influence of Fractures on Vulnerability to Pollution of a Carbonate Aquifer: Monte Conero (Italy)." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5228/.

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The carbonate outcrops of the anticline of Monte Conero (Italy) were studied in order to characterize the geometry of the fractures and to establish their influence on the petrophysical properties (hydraulic conductivity) and on the vulnerability to pollution. The outcrops form an analog for a fractured aquifer and belong to the Maiolica Fm. and the Scaglia Rossa Fm. The geometrical properties of fractures such as orientation, length, spacing and aperture were collected and statistically analyzed. Five types of mechanical fractures were observed: veins, joints, stylolites, breccias and faults.

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25

Cole, Matthew C. "Periodic Hydraulic Tests in a Fractured Crystalline Bedrock." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10742695.

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<p>A better understanding of groundwater flow through bedrock fractures is critical to applications involving heat and solute transport. Pumping tests performed to characterize these systems are often ill-suited because the radius of penetration quickly expands beyond the inter-well distance, gaining information beyond the well pair of interest. Periodic hydraulic tests allow the radius of penetration to be controlled by the frequency of oscillation, and testing at multiple frequencies gives parameter estimates for a range of spatial scales. Periodic pumping tests were performed at the Mirror

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26

Elliot, Henry K. "Fractures in the region of the Rocky Hill anticline, Rocky Hill, Connecticut : a structural geological study /." View abstract, 2001. http://library.ccsu.edu/ccsu%5Ftheses/showit.php3?id=1644.

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Thesis (M.S.)--Central Connecticut State University, 2001.<br>Thesis advisor: Charles W. Dimmick. " ... in partial fulfillment of the requirements for the degree of Master of Science in Physics and Earth Sciences." Includes bibliographical references (leaves 60-64). Also available via the World Wide Web.

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27

Roach, Daniel Edward. "Fractal analyses and geometrical models of fracture surfaces in rock." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/7844.

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Fracture propagation in rock often produces complex patterns, such as the branching patterns of fracture networks, or the irregular radiating patterns on fracture surfaces. These patterns often appear complex because they are unpredictable in detail, yet predictable in the sense that smaller pieces of the pattern, when suitably enlarged, are statistically similar to larger pieces of the pattern. This property of statistical self-similarity can be quantified using fractal geometry. The fractal nature of rock fracture patterns is related to lithological properties and to the dynamics of the frac

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28

McCraw, Claire Aarti. "Supercritical CO2 flow through fractured low permeability geological media : experimental investigation under varying mechanical and thermal conditions." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/31020.

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To ensure secure geological storage of carbon dioxide it is necessary to establish the integrity of the overlying sealing rock. Seal rock fractures are key potential leakage pathways for storage systems; understanding their behaviour in the presence of CO2 under reservoir conditions is therefore of great importance. This thesis presents experimental investigations into the hydraulic behaviour of discrete fractures within low permeability seal rocks during single phase supercritical CO2 flow, under varying mechanical and thermal conditions representative of in-situ conditions. An experimental r

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29

Petracchini, Lorenzo <1979&gt. "Characterization of fold-related fractures in the carbonate rocks of the Cingoli anticline, northern Apennines, Italy." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5770/.

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Thrust fault-related folds in carbonate rocks are characterized by deformation accommodated by different structures, such as joints, faults, pressure solution seams, and deformation bands. Defining the development of fracture systems related to the folding process is significant both for theoretical and practical purposes. Fracture systems are useful constrains in order to understand the kinematical evolution of the fold. Furthermore, understanding the relationships between folding and fracturing provides a noteworthy contribution for reconstructing the geodynamic and the structural evolution

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30

Weatherington-Rice, Julie B. P. "Fracture occurrence and ground water pollution in Ohio's glacial and lacustrine deposits a soils, geologic, and educational perspective /." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1072118096.

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31

Rodack, Haley Elizabeth. "Using Fracture Flow Modeling to Understand the Effectiveness of Pump and Treat Remediation in Dual Permeability Media." Master's thesis, Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/324989.

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Geology<br>M.S.<br>Pump and treat remediation is the most commonly used method to remediate contaminated aquifers, but the effectiveness decreases when heterogeneities are introduced. Fractures within the matrix cause large differences in hydraulic conductivity. The low hydraulic conductivity of the matrix acts as an area of storage for contaminant, allowing for attenuation of the plume. The attenuation of the plume causes the effectiveness of the system to decrease and cost of remediation to increase. In order to understand what parameters enhance contaminant storage in the matrix, rapid tran

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32

Huck, Scott W. "Controls on Natural Fractures in the Upper Lexington Limestone and Point Pleasant Formation: Central-Ohio." Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1372061876.

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33

Park, Jinyong. "Experimental and Numerical Investigations of Fluid Flow for Natural Single Rock Fractures." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1385%5F1%5Fm.pdf&type=application/pdf.

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34

Varga-Vass, Anna. "Large-scale dynamic hydrofracturing, healing and fracture network characterization." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6846/.

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Permeability of a rock is a dynamic property that varies spatially and temporally. Fractures provide the most efficient channels for fluid flow and thus directly contribute to the permeability of the system. Fractures usually form as a result of a combination of tectonic stresses, gravity (i.e. lithostatic pressure) and fluid pressures. High pressure gradients alone can cause fracturing, the process which is termed as hydrofracturing that can determine caprock (seal) stability or reservoir integrity. Fluids also transport mass and heat, and are responsible for the formation of veins by precipi

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35

Griffith, Craig Alexander. "Physical Characteristics of Caprock Formations used for Geological Storage of CO₂ and the Impact of Uncertainty in Fracture Properties in CO₂ Transport through Fractured Caprocks." Research Showcase @ CMU, 2012. http://repository.cmu.edu/dissertations/122.

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Capture and geological sequestration of CO2 from energy production is proposed to help mitigate climate change caused by anthropogenic emissions of CO2 and other greenhouse gases. Performance goals set by the US Department of Energy for CO2 storage permanence include retention of at least 99% of injected CO2 mass. Part of meeting these goals will be detailed assessments of each potential storage site’s geologic environment, especially properties of the storage reservoir(s) and caprock(s) that may affect permanence of CO2 storage. The overall goals of this research were to examine the physical

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36

SILVESTRE, JOSE ROBERTO. "MODELING OF FLUID-MECHANIC COUPLED PROBLEMS IN FRACTURED GEOLOGICAL MEDIA USING ENRICHED FINITE ELEMENTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34990@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Meios que apresentam descontinuidades como fraturas e falhas em um maciço rochoso ou reservatórios de petróleo impõem algumas dificuldades na simulação numérica pelo Método dos Elementos Finitos. Uma dessas dificuldades é a necessidade de geração de malhas muito refinadas, principalmente na região próxima à descontinuidade, até a obtenção de uma resposta confiável do modelo, o que pode consumir um tempo significativo. Ao mesmo tempo, a discre

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37

Mahmoudzadeh, Batoul. "Solute transport through fractured rocks : the influence of geological heterogeneities and stagnant water zones." Doctoral thesis, KTH, Kemisk apparatteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-183592.

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To describe reactive solute transport and retardation through fractured rocks, three models are developed in the study with different focuses on the physical processes involved and different simplifications of the basic building block of the heterogeneous rock domain. The first model evaluates the effects of the heterogeneity of the rock matrix and the stagnant water zones in part of the fracture plane. The second and the third models are dedicated to different simplifications of the flow channels. Both account for radioactive decay chain, but consider either a rectangular channel with linear

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Arvin, Tracey A. "The Bedrock Geology and Fracture Characterization of the Maynard Quadrangle of Eastern Massachusetts." Thesis, Boston College, 2010. http://hdl.handle.net/2345/1731.

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Thesis advisor: John C. Hepburn<br>The bedrock geology of the Maynard quadrangle of east-central Massachusetts was examined through field and petrographic studies and mapped at a scale of 1:24,000. The quadrangle spans much of the Nashoba terrane and a small area of the Avalon terrane. Two stratigraphic units were defined in the Nashoba terrane: the Cambrian to Ordovician Marlboro Formation and the Ordovician Nashoba Formation. In addition, four igneous units were defined in the Nashoba terrane: the Silurian to Ordovician phases of the Andover Granite, the Silurian to Devonian Assabet Quartz D

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Miller, Andrew Thomas. "Mathematical modelling of fractures, silica deposition and thermoelasticity in hydrothermal upflow zones." Thesis, University of Southampton, 1999. https://eprints.soton.ac.uk/50637/.

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The permeability of the fractured geothermal systems in the Taupo Volcanic Zone (TVZ) of New Zealand is continually evolving due to mineral deposition and stress transients. It is generally accepted that a cyclic process, involving mineral deposition and crack dilation, is responsible for the formation of mineral veins of up to a metre in thickness. Studies of vein formation have focussed on the mechanics of dilation. Seismic activity and hydrofracturing are commonly accepted as mechanisms that generate the stress transients required to cause refracturing. By contrast, thermal stress transient

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40

Vainio, A. (Anna). "Bedrock fracture zones and esker chains in the Kyläniemi area, SE Finland." Master's thesis, University of Oulu, 2013. http://urn.fi/URN:NBN:fi:oulu-201306051513.

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The Kyläniemi area is situated in the Salpausselkä I- Salpausselkä II end moraine zone. Bedrock fracture zones are less well studied in the study area because the area is mostly under water and bedrock is exposed only on little islands. The primary aim of this work was to study bedrock of the study area, bedrock fracture zones and their relationship to esker chains in the study area. The work forms a part of Subjärki project which is a joint research venture of the University of Oulu and POSIVA Oy. The work has been carried out by geologic field work on bedrock exposures, Ground Penetrating Ra

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Chong, Ting-Fung. "Mineralogy and petrology of a drill core section from Borg, SW Norrköping – fracture fillings and tentative mineral reactions." Thesis, Stockholms universitet, Institutionen för geologiska vetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-173221.

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During drilling at Borg, ca. 5 km southwest of central Norrköping, an unidentified fine-grained grey rock was encountered in contact with dark red granitic gneiss at 35m depth. The fine-grained grey rock occurs above the red granitic gneiss. Our understanding prior to testing is that the rock may have been formed by fluid alteration of a mafic rock, as neither metamorphic nor sedimentary textures were observed. Understanding this rock and the formation processes related to it, is of interest for the general understanding of the region and of geotechnical importance since fracture fillings may

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Osterman, Fredrik. "The Impact of Fracture Orientation on the Choice of Grout Fan Geometry - a Statistical Analysis." Thesis, KTH, Jord- och bergmekanik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259668.

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Water ingress into rock tunnels is a problematic phenomenon – especially in urban areas – as a lowered groundwater table may cause harmful settlements. Furthermore, too much ingress can be an incentive for the environmental court to halt the tunnel process, in order to protect the nature as part of a national interest.Water ingress is normally lowered by injecting a water and cement mixture into boreholes in the rock mass – a process called rock grouting – thus sealing the rock fractures. Very little information and research has been on the subject of how the rock fracture orientation interact

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43

Alfvén, Linda. "Structural and Engineering Geological Investigation of Fracture Zones and Their Effect on Tunnel Construction." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-272495.

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This thesis project was conducted in connection with the project, Stockholm’s future sewer pipeline, which is a planned sewer pipe that will run through a tunnel from western to southern Stockholm. This tunnel will pass under Lake Mälaren between Eolshäll and Smedslätten, where there are two faults indicated on the geological map, that could affect the tunnelling and create risks during the construction. Geophysical- and water-loss measurements along with core drilling have been carried out in the area. The objectives of this thesis are to create a structural and engineering geological underst

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44

Ciervo, Christopher M. "Establishing Hydraulic Connectivity in Bedrock by Measuring the Hydromechanical Response of Fractures with Distributed Acoustic Sensing (DAS)." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10840951.

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<p> Fiber optic Distributed Acoustic Sensing (DAS) is based on the principles of Coherent Rayleigh Optical Time Domain Reflectometry, where light pulses are fired through an optical fiber, and photon backscatter is measured with an optical sensor. Strain in the fiber causes changes in the amplitude and phase of backscattered light. Using light’s two-way travel time, the optical sensor measures strain at distributed points along the length of fiber. In this work, DAS was adapted to establish hydraulic connectivity in bedrock by measuring hydromechanical strain in an observation well, as p

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Pastoriza, Loraine Rosales. "The geological characterisation and permeability evaluation of fractures in the Southern Negros Geothermal Field, Negros Island, Philippines." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/12072/.

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Fluid flow pathway characterisation is critical to geothermal exploration and exploitation. In fractured geothermal reservoirs, it requires a good understanding of the structural evolution, fault distribution and fluid flow properties. A dominantly fieldwork-based approach has been used to evaluate the potential fracture permeability characteristics of a typical high-temperature geothermal reservoir in the Southern Negros Geothermal Field, Philippines. This is a liquid-dominated resource hosted in the andesitic Quaternary Cuernos de Negros Volcano, Negros Island. Fieldwork reveals two main fra

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Gierzynski, Alec Owen. "Implications of Permeability Uncertainty During Three-phase CO2 Flow in a Basalt Fracture Network." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/83497.

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Recent studies suggest that continental flood basalts may be suitable for geologic carbon sequestration due to fluid-rock reactions that mineralize injected CO₂ on relatively short time-scales. Flood basalts also possess a permeability structure favorable for injection, with alternating high-permeability (flow margin) and low-permeability (flow interior) layers. However, little information exists on the behavior of CO₂ as it leaks through fractures characteristic of the flow interior, particularly at conditions near the critical point for CO₂. In this study, a two-dimensional 5 × 5 m model of

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Lamontagne, Éric. "Étude hydromécanique d'une fracture en cisaillement sous contrainte normale constante /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2001. http://theses.uqac.ca.

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McKay, Angus Marshall. "A fundamental study of the fracture processes of actual and model mineralogical materials." Thesis, University of Exeter, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286497.

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Ghosh, Kajari. "Characterizing fracture distribution in layered rocks using geographic information system-based techniques." FIU Digital Commons, 2003. https://digitalcommons.fiu.edu/etd/3932.

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Fractures are discrete planar features that are heterogeneously distributed throughout the earth's upper crust. Methods commonly used to quantify fracture populations typically yield singular values/indexes for the attribute of interest. These values are useful in characterizing the bulk properties of a fracture population, but are unable to address the inherent spatial heterogeneities of the fracture network. This study explores techniques to map fractures and capture the spatial heterogeneity of fracture networks within a Geographic Information System (GIS). The study was performed on exposu

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Al-Fahmi, Mohammed M. "Controls on fracture abundance in gently deformed carbonates." Thesis, University of Oxford, 2018. http://ora.ox.ac.uk/objects/uuid:74e221c4-6b37-46a5-bba8-7aaa458bed92.

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Fractures can profoundly affect the capacity of carbonate reservoirs to store and permeate fluids, depending on the properties and abundance of fractures. Fractures exist abundantly in carbonate outcrops; however, their abundance in subsurface carbonates is obscure because of the data shortages and uncertainties about the factors that drive fracturing in sedimentary basins. The objective of this research is twofold. The first is to study abundance of fractures in gently deformed carbonates, which were generally overlooked. The second is to address measuring fracture abundance using electrical

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