Bibliografie tematiche / Rock joints

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Letteratura scientifica selezionata sul tema "Rock joints"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 6 settembre 2023

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Articoli di riviste sul tema "Rock joints"

1

Liu, Chao, Mingyang Yang, Haoyu Han, and Wenping Yue. "Numerical simulation of fracture characteristics of jointed rock masses under blasting load." Engineering Computations 36, no. 6 (2019): 1835–51. http://dx.doi.org/10.1108/ec-09-2018-0404.

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Purpose To study fracture characteristics of jointed rock masses under blasting load, the RFPA2D analysis software for dynamic fracture of rocks based on the finite element method and statistical damage theory was used. Design/methodology/approach On this basis, this research simulated the fracture process of rock masses in blasting with different joint geometrical characteristics and mainly analysed the influences of distance from joints to blasting holes, the length of joints, the number of joints and joint angle on fracture of rock masses. Findings The calculation results show that with the
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2

Zhu, Wei, Liang Gao, Yingai Zhao, Chao Yang, Wei Sun, and Pengqiang Yu. "Stability Analysis of Jointed Rock Cutting Slope Based on Discrete Element Method." Advances in Civil Engineering 2022 (July 16, 2022): 1–10. http://dx.doi.org/10.1155/2022/4915820.

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The joints in the rock mass are essential for the stability of rocky slopes, and the destabilization damage of the slope is often directly related to the joints. In this study, in order to reveal the instability process and mechanism of rock slopes from a microscale perspective, the DEM simulations for rocky slopes of the K88 + 400∼K88 + 540 section of Zhongkai Expressway are carried out considering the influence of joints. Based on the findings of the on-site jointed structural surfaces, a rocky slope model containing two sets of intermittent joints was constructed, and the linear parallel bo
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3

Hu, Gaojian, and Gang Ma. "Size effect of parallel-joint spacing on uniaxial compressive strength of rock." PLOS ONE 16, no. 9 (2021): e0257245. http://dx.doi.org/10.1371/journal.pone.0257245.

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The existence of parallel joints has an impact on the size effect of the uniaxial compressive strength of rock, but the relationship is yet to be obtained. In this paper, the influence of parallel-joint spacing on the size effect and characteristic size of rock uniaxial compressive strength is studied by establishing five types of parallel-joint-spacing simulation schemes. The influence of parallel-joint spacing on the size effect of rock uniaxial compressive strength is explored by analyzing the stress–strain curves of rocks with different parallel-joint spacings and rock sizes. The relations
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Lei, Wei Dong, Xue Feng He, and Rui Chen. "Verification of UDEC Modeling 1-D Wave Propagation in Rocks." Applied Mechanics and Materials 90-93 (September 2011): 1998–2001. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.1998.

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Three cases for 1-D wave propagation in ideal elastic rock, through single rock joint and multiple parallel rock joints are used to verify 1-D wave propagation in rocks. For the case for 1-D wave propagation through single rock joint, the magnitude of transmission coefficient obtained from UDEC results is compared with that obtained from the analytical solution. For 1-D wave propagation through multiple parallel joints, the magnitude of transmission coefficient obtained from UDEC results is compared with that obtained from the method of characteristics. For all these cases, UDEC results agree
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Yang, Dong Mei, and Xiang Bo Qiu. "A Constitutive Model for Rock Joints under Cyclic Loading." Advanced Materials Research 243-249 (May 2011): 2211–15. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.2211.

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Cyclic loads are commonly encountered in geotechnical engineering; however most constitutive models do not account for the effect that such loads can have on the mechanical behaviour of soils and rocks. This work is concerned with the behaviour of jointed rock and, as the overall mechanical behaviour of jointed rock is usually dominated by the mechanical behaviour of the joints, it is focused on the behaviour of rock joints under cyclic loads. In particular, an extension of the existed constitutive model for cyclically loaded rock joints is presented. Variations of rock joint stiffness in both
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FIFER BIZJAK, Karmen, and Rok VEZOČNIK. "Prediction of the peak shear strength of the rock joints with artificial neural networks." Geologija 65, no. 2 (2022): 149–58. http://dx.doi.org/10.5474/geologija.2022.009.

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With the development of computer technology, artificial neural networks are becoming increasingly useful in the field of engineering geology and geotechnics. With artificial neural networks, the geomechanical properties of rocks or their behaviour could be predicted under different stress conditions. Slope failures or underground excavations in rocks mostly occurred through joints, which are essential for the stability of geotechnical structures. This is why the peak shear strength of a rock joint is the most important parameter for a rock mass stability. Testing of the shear characteristics o
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7

Guo, Jiaqi, Lipan Cheng, Yongbiao Lai, Yongchao Tian, and Lu Li. "Study on Shear Mechanical Properties and Microscopic Failure Mechanism of Dentate Joints Based on DEM and Laboratory Tests." Buildings 12, no. 9 (2022): 1485. http://dx.doi.org/10.3390/buildings12091485.

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The stability control of the surrounding rock is greatly influenced by the rock joint’s shear mechanical characteristics and deformation failure mechanism. A numerical model of the dentate joints was created using a particle flow discrete element method (DEM). To study the shear mechanical behavior and damage evolution characteristics of the joints, a numerical simulation of the joints shear test under the same normal stress was conducted. Additionally, the joints’ shear failure mechanism and failure mode were investigated from a microscopic perspective in conjunction with laboratory tests. Th
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8

Hu, Gaojian, Yu Li, and Gang Ma. "Research on the size effect of roughness on rock uniaxial compressive strength and characteristic strength." Science and Engineering of Composite Materials 28, no. 1 (2021): 613–27. http://dx.doi.org/10.1515/secm-2021-0058.

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Abstract The joint roughness has an influence on the uniaxial compressive strength (UCS) and characteristic strength of the rock, but the relationship of the influence is yet to be obtained. In this article, the influence of the size of the rock with rough joints on the UCS and the influence of the size effect of roughness on the UCS are studied by establishing 11 sets of numerical simulation schemes, a total of 30 working conditions. The stress–strain curve law of rocks with different roughness and sizes is analyzed, and the relationship between UCS and the size of rock with rough joints, joi
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Cheng, Ping, Yanbo Li, Caiwu Lu, Song Jiang, and Hanhua Xu. "Study on Blasting Effect Optimization to Promote Sustainable Mining under Frozen Conditions." Sustainability 14, no. 24 (2022): 16479. http://dx.doi.org/10.3390/su142416479.

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In order to respond to the theme of national green and healthy sustainable development and in response to the problems of large block rates and pollution of the environment after the blast mining of underground rocks in alpine areas, we conducted research on the joints of underground rocks and the blastability of frozen rocks. According to the actual geological conditions of an underground mine blasting in Heilongjiang Province, three kinds of joint blasting geometric models were established. The rock mass blasting process of different types of joints was simulated by LS-DYNA software and the
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Shen, Jiayi, Chenhao Sun, Huajie Huang, Jiawang Chen, and Chuangzhou Wu. "Scale Effects on Shear Strength of Rough Rock Joints Caused by Normal Stress Conditions." Sustainability 15, no. 9 (2023): 7520. http://dx.doi.org/10.3390/su15097520.

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Scale effects on the mechanical behavior of rock joints have been extensively studied in rocks and rock-like materials. However, limited attention has been paid to understanding scale effects on the shear strength of rock joints in relation to normal stress σn applied to rock samples under direct shear tests. In this research, a two-dimensional particle flow code (PFC2D) is adopted to build a synthetic sandstone rock model with a standard joint roughness coefficient (JRC) profile. The manufactured rock model, which is adjusted by the experiment data and tested by the empirical Barton’s shear s
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Tesi sul tema "Rock joints"

1

Cheng, Pei-fen Caral. "Project report on direct shear tests for rock joints." Click to view the E-thesis via HKUTO, 2002. http://sunzi.lib.hku.hk/hkuto/record/B42576659.

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Cheng, Pei-fen Caral, and 鄭佩芬. "Project report on direct shear tests for rock joints." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B42576659.

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Snyman, M. F. "Numerical modelling of dilatant rock joints." Doctoral thesis, University of Cape Town, 1991. http://hdl.handle.net/11427/22144.

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Bibliography: pages 107-110.<br>Aluminium forms a highly neurotoxic complex with maltol (3-hydroxy-2-methyl-4H-pyran-one). The stability of this complex has been determined using glass-electrode potentiometry. Owing to the effect on nuclear relaxation behaviour, paramagnetic contrast agents have immense diagnostic potential and have recently received a great deal of attention in the literature. The gadoliniummaltol complex was studied with the view to developing a potential tissue-specific magnetic resonance imaging contrast agent. Because of the interest in medical applications of radioactive
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Lazzari, Elisa. "Analysis of shear strength of rock joints with PFC2D." Thesis, KTH, Jord- och bergmekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129740.

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Abstract (sommario):
Joints are the main features encountered in rock and sliding of rock blocks on joints is classified as the principal source of instability in underground excavations. In this regard, joints’ peak shear strength is the controlling parameter. However, given the difficulty in estimating it, shear tests are often performed. These are often quite expensive and also time consuming and, therefore, it would be valuable if shear tests could be artificially performed using numerical models. The objective of this study is to prove the possibility to perform virtual numerical shear tests in a PCF2D enviro
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Lindfors, Ulf. "Experimental study of the mechanics of rock joints." Licentiate thesis, Luleå tekniska universitet, 1996. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25833.

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Szymakowski, Jerry. "Direct shear testing of jointed soft rock masses." Monash University, Dept. of Civil Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/9573.

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Nguyen, Van Manh. "Static and dynamic behaviour of joints in schistose rock." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2013. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-126295.

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The shear behaviour of rough rock joints was investigated by both laboratory testing and numerical simulation. The most powerful servo-controlled direct shear box apparatus in the world with normal forces up to 1000 kN, shear loading up to 800 kN and frequencies up to 40 Hz under full load was used to investigate the shear strength of schistose rock blocks with dimensions of up to 350 x 200 x 160 mm in length, width and height, respectively. The experiments were performed to study the behaviour of rough rock joints under constant normal load, constant normal stiffness and dynamic boundary con
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Larsson, Jörgen. "Quality aspects in direct shear testing of rock joints." Licentiate thesis, KTH, Jord- och bergmekanik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-294801.

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Abstract (sommario):
The stability of rock masses is influenced by the occurrence of rock joints. Therefore, the shear strength of rock joints must be considered in dimensioning of underground constructions. One way to predict the shear strength is through usage of failure criteria, which are validated from results of direct shear tests under controlled laboratory conditions. Consequently, the quality of the results from the tests are crucial to the accuracy with which the criteria will be able to predict the shear strength. Since rock joints are unique by nature usage of replicas (man-made copies of rock joints)
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Jade, (B) Sridevi. "Numerical Modeling Of Jointed Rock Mass." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/257.

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Abstract (sommario):
The behavior of jointed rock mass is very complex and is influenced by many factors such as location of joints, joint frequency, joint orientation and joint strength. A thorough review of literature on different aspects of jointed rock mass indicate that the discontinuities or planes of weakness present in rock mass significantly influence its behavior. Numerous experimental tests were conducted to study the behavior of natural as well as artificial joints in rocks. Laboratory tests are time consuming and give results applicable to specific joint fabric and confining pressure. Numerical method
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Jade, (B) Sridevi. "Numerical Modeling Of Jointed Rock Mass." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/257.

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Abstract (sommario):
The behavior of jointed rock mass is very complex and is influenced by many factors such as location of joints, joint frequency, joint orientation and joint strength. A thorough review of literature on different aspects of jointed rock mass indicate that the discontinuities or planes of weakness present in rock mass significantly influence its behavior. Numerous experimental tests were conducted to study the behavior of natural as well as artificial joints in rocks. Laboratory tests are time consuming and give results applicable to specific joint fabric and confining pressure. Numerical method
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Più fonti

Libri sul tema "Rock joints"

1

Mandl, Georg. Rock joints: The mechanical genesis. Springer, 2005.

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Rock joints: The mechanical genesis. Springer, 2005.

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3

M, Hsiung S., Chowdhury A. H, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Applications., and Center for Nuclear Waste Regulatory Analyses (Southwest Research Institute), eds. Seismic response of rock joints and jointed rock mass. U.S. Nuclear Regulatory Commission, 1996.

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4

International, Symposium on Fundamentals of Rock Joints (1985 Björkliden Sweden). Fundamentals of rock joints. Centek Publishers, 1985.

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5

Indraratna, Buddhima. Shear behaviour of rock joints. A.A. Balkema, 2000.

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6

International Symposium on Rock Joints (1990 Loen, Norway). Rock joints: Proceedings of the International Symposium on Rock Joints, Loen/Norway/4-6 June 1990. Balkema, 1990.

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International Symposium on Rock Joints (1990 Loen, Norway). Rock joints: Proceedings of the International Symposium on Rock Joints, Loen/Norway/4-6 June 1990. A.A. Balkema, 1990.

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International Symposium on Fundamentals of Rock Joints (1985 Bjorkliden). Fundamentals of rock joints: Proceedings of the International Symposium on Fundamentals of Rock Joints, Bjorkliden, 15-20 September 1985. Centek, 1985.

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9

Cheng, Jinquan. Smart adhesively bonded composite joints: Analysis and design. Nova Science, 2009.

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10

D, Kana Daniel, Center for Nuclear Waste Regulatory Analyses (Southwest Research Institute), and U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Applications., eds. An experimental scale-model study of seismic response of an underground opening in jointed rock mass. U.S. Nuclear Regulatory Commission, 1997.

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Capitoli di libri sul tema "Rock joints"

1

Indraratna, Buddhima, and Asadul Haque. "Infilled rock joint behaviour." In Shear Behaviour of Rock Joints. CRC Press, 2021. http://dx.doi.org/10.1201/9781003211297-3.

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Indraratna, Buddhima, and Asadul Haque. "Shear behaviour of clean rock joints." In Shear Behaviour of Rock Joints. CRC Press, 2021. http://dx.doi.org/10.1201/9781003211297-2.

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Indraratna, Buddhima, and Asadul Haque. "Highlights of rock joint behaviour under CNL and CNS conditions, and recommendations for the future." In Shear Behaviour of Rock Joints. CRC Press, 2021. http://dx.doi.org/10.1201/9781003211297-6.

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Indraratna, Buddhima, and Asadul Haque. "Characterization of joint surface roughness." In Shear Behaviour of Rock Joints. CRC Press, 2021. http://dx.doi.org/10.1201/9781003211297-1.

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Indraratna, Buddhima, and Asadul Haque. "Modelling the shear behaviour of rock joints." In Shear Behaviour of Rock Joints. CRC Press, 2021. http://dx.doi.org/10.1201/9781003211297-4.

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Indraratna, Buddhima, and Asadul Haque. "Simplified approach for using CNS technique in practice." In Shear Behaviour of Rock Joints. CRC Press, 2021. http://dx.doi.org/10.1201/9781003211297-5.

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Barton, Nick. "Shear Strength Criteria for Rock, Rock Joints, Rockfill, Interfaces and Rock Masses." In Springer Series in Geomechanics and Geoengineering. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32814-5_1.

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Bhardwaj, Sandeep, and K. Seshagiri Rao. "Direct Shear Strength of Natural Rock Joints." In Lecture Notes in Civil Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-6140-2_38.

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Wang, Guodong, and Francesco Calvetti. "DEM Modelling of Ice Filled Rock Joints." In Challenges and Innovations in Geomechanics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64518-2_112.

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Xia, Caichu, Qiangfeng Yu, Yang Gui, Xin Qian, Xiaoqing Zhuang, and Songbo Yu. "Shear Behavior of Rock Joints Under CNS Boundary Condition." In Proceedings of GeoShanghai 2018 International Conference: Rock Mechanics and Rock Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0113-1_29.

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Atti di convegni sul tema "Rock joints"

1

Warema, Senzia, Erling Nordlund, and Changping Yi. "Numerical Analysis of Effects of Joints properties on Dynamic Response on Underground Opening." In The IV Nordic Symposium on Rock Mechanics and Rock Engineering. Jarðtæknifélag Íslands og Jarðgangafélag Íslands, 2023. http://dx.doi.org/10.33112/nrock2023.8.

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Abstract (sommario):
Rock masses are far from being continuum and consist essentially of intact rock and discontinuities such as joints. Presences of discontinuities affects the propagation of the stress wave in rock mass. In this paper the impact of joints properties and features on the dynamic response of underground cross-cuts to seismic loading induced during dynamic large-scale field test in Kiirunavaara mine, was numerically investigated. The numerical methods used comprise the finite element code LS-DYNA and the 2D Universal Distinct Element Code (UDEC). The LS-DYNA model simulated the blasting and acquired
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Wu, Chuangzhou, Jian Chu, and Shifan Wu. "Biogrouting of Rock Joints." In Geo-Congress 2020. American Society of Civil Engineers, 2020. http://dx.doi.org/10.1061/9780784482834.001.

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Kim, G. G., C. H. Shin, P. R. Jeon, et al. "Laboratory Test on Direct Shear Behavior of Rock Joints Using a Bar Drop Impact System." In 56th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2022. http://dx.doi.org/10.56952/arma-2022-2318.

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ABSTRACT: For an underground excavation at depth in highly stressful conditions, it is important to mitigate the risk of stress-induced failure, e.g., rockburst, and improve miner safety concerning the stability of underground workplaces and the prevention of fatalities. In general, the cause of rockburst is classified into three categories: strainburst due to stress-induced fracturing, rock ejection by seismic energy transfer, and rockfall associated with mining-induced seismicity. In this study, the Split Hopkinson Pressure Bar (SHPB) modified configuration of bar drop apparatus was develope
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Li, J., Xinmei An, and Guowei Ma. "Wave Propagation and Attenuation Through Filled Rock Joints." In First Southern Hemisphere International Rock Mechanics Symposium. Australian Centre for Geomechanics, Perth, 2008. http://dx.doi.org/10.36487/acg_repo/808_99.

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Ficker, Tomas. "THREE-DIMENSIONAL ROCK JOINTS AND THEIR TOPOLOGY ASSESSMENTS." In 16th International Multidisciplinary Scientific GeoConference SGEM2016. Stef92 Technology, 2016. http://dx.doi.org/10.5593/sgem2016/b13/s02.043.

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Bikash Kumar, Ram, and Basu Arindam. "Assessment of frictional resistance of granite rock joints with reference to weathering." In Recent Advances in Rock Engineering (RARE 2016). Atlantis Press, 2016. http://dx.doi.org/10.2991/rare-16.2016.47.

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Ficker, Tomas. "FOURIER METHOD FOR EVALUATION OF IRREGULARITY OF ROCK JOINTS." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/12/s02.045.

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Deng, Desheng, Richard Simon, and Michel Aubertin. "Modelling Shear and Normal Behaviour of Filled Rock Joints." In GeoCongress 2006. American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40803(187)159.

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Indraratna, Buddhima, David Oliveira, and Jayanathan Mylvaganam. "Revised Shear Strength Model for Soil-Infilled Rock Joints Considering Over-Consolidation Effect." In First Southern Hemisphere International Rock Mechanics Symposium. Australian Centre for Geomechanics, Perth, 2008. http://dx.doi.org/10.36487/acg_repo/808_75.

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Van Sint Jan, Michel, and Mauricio Prudencio. "The Influence of Non-Persistent Joints on the Failure Modes of Large Rock Slopes." In First Southern Hemisphere International Rock Mechanics Symposium. Australian Centre for Geomechanics, Perth, 2008. http://dx.doi.org/10.36487/acg_repo/808_161.

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Rapporti di organizzazioni sul tema "Rock joints"

1

Ghosh, A., S. M. Hsiung, and A. H. Chowdhury. Seismic response of rock joints and jointed rock mass. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/270673.

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2

Hsiung, S. M., D. D. Kana, M. P. Ahola, A. H. Chowdhury, and A. Ghosh. Laboratory characterization of rock joints. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10165956.

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3

Murphy, Hugh D., Zora V. Dash, George A. Zyvoloski, Andrew White, and Milton Wing. Fluid Flow in Deformable Rock Joints – Part I. Office of Scientific and Technical Information (OSTI), 1985. http://dx.doi.org/10.2172/1321620.

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Morris, J. P. Review of Rock Joint Models. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/15005881.

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Thapa, Bhaskar Bahadur. Analysis of in-situ rock joint strength using digital borehole scanner images. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10107663.

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Murray, Yvonne D. Computational Modeling of Underground Tunnels in Intact and Jointed Rock. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada319834.

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Antoun, Tarabay H., and Donald R. Curran. Wave Propagation in Intact and Jointed Calcium Carbonate (CaCO3) Rock. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada305457.

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Maupin, Julie, and Dr Michael Mamoun. DTPH56-06-T-0004 Plastic Pipe Failure, Risk, and Threat Analysis. Pipeline Research Council International, Inc. (PRCI), 2006. http://dx.doi.org/10.55274/r0012119.

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Reports, publications, papers, and databases were reviewed to better define risks and threats to plastic gas distribution piping. Failure modes were described for plastic PE piping with the most significant being slow crack growth (SCG). Short-term mechanical tests such as tensile, quick burst, melt index, and density tests did not show a correlation with a material's susceptibility to SCG failure. The bend-back test was able to visually identify 1971 low-ductile inner wall materials. PENT test failure times were reported for materials manufactured during the period1972-1985. The PENT test did
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Guidati, Gianfranco, and Domenico Giardini. Joint synthesis “Geothermal Energy” of the NRP “Energy”. Swiss National Science Foundation (SNSF), 2020. http://dx.doi.org/10.46446/publication_nrp70_nrp71.2020.4.en.

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Abstract (sommario):
Near-to-surface geothermal energy with heat pumps is state of the art and is already widespread in Switzerland. In the future energy system, medium-deep to deep geothermal energy (1 to 6 kilometres) will, in addition, play an important role. To the forefront is the supply of heat for buildings and industrial processes. This form of geothermal energy utilisation requires a highly permeable underground area that allows a fluid – usually water – to absorb the naturally existing rock heat and then transport it to the surface. Sedimentary rocks are usually permeable by nature, whereas for granites
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10

Heuze, F. The Effect of Scale on the Mechanical Properties of Jointed Rock Masses. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/15014162.

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