Relevant bibliographies by topics / Rock mechanics

Academic literature on the topic 'Rock mechanics'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 August 2024

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Journal articles on the topic "Rock mechanics"

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Wu, Si Yu, Bo Huang, and Rui Jun Liu. "Study about Mechanic Parameter of Slope Rock Mass' Structure Plane." Applied Mechanics and Materials 368-370 (August 2013): 1551–55. http://dx.doi.org/10.4028/www.scientific.net/amm.368-370.1551.

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Firstly, the stability of the slope need to determine mechanical parameters of slope rock mass such as deformation modulus, Poissons ratio, cohesion and internal friction angle, etc. For intact rocks, the mechanical parameters mentioned before are easy to determined. While the stability of slope rock mass is controlled by the deformation and intensity. Therefore, how to determine the mechanical parameters of the structure is the key to analyze the stability of slope rock mass. This paper intends to set the slope rock mass below some extra-large bridge as the research object and use numerical calculation to determine the mechanics parameters of rock mass structure plane on the basis of rock sample mechanics test results.
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Feng, Fan, Zhiwei Xie, Tianxi Xue, Eryu Wang, Ruifeng Huang, Xuelong Li, and Shixian Gao. "Application of a Combined FEM/DEM Approach for Teaching a Deep Rock Mass Mechanics Course." Sustainability 15, no. 2 (January 4, 2023): 937. http://dx.doi.org/10.3390/su15020937.

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Deep rock mass mechanics is a professional course which is offered to undergraduate and postgraduate students in some mining universities. This course mainly includes the following topics: the geological structure of deep rock mass, the mechanical properties of deep rocks, the strength theory of deep rock masses, stability analysis and control of deep surrounding rock classification of engineering rock masses, and the application of deep rock mechanics in underground mining engineering The purpose of this course is to present students with a basic theoretical knowledge of deep rock mass engineering. Analyzing the limitations of traditional deep rock mass mechanics teaching methods, here, we propose integrating a combined FEM/DEM (Finite Element Method/Discrete Element Method) approach into the teaching of a course on deep rock mass mechanics. The mechanical behaviors and failure instability process of rock at laboratory and engineering scales were analyzed using ELFEN software (a finite/discrete element code). The results show that a combined FEM/DEM approach as a deep rock mass mechanics teaching method is completely feasible and reasonable; this approach has the advantages of strong intuition, high reliability, time and labor savings, and low cost, which can offset the shortcomings of traditional teaching methods. Moreover, the proposed approach can stimulate students’ interests in a mining course on deep rock mass mechanics, deepen students’ understanding of the course curriculum, and cultivate students’ innovative abilities and subjective initiatives.
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He, Hai Ying. "Mechanism and Calculation Research on Excavation Deformation of High Layered Dip Rocky Slope." Advanced Materials Research 455-456 (January 2012): 1596–600. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.1596.

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Based on rock Mechanical theory under unloading, according to the analysis of rock mechanics state of pre and post excavation of the layered dip rocky slope, it was found that excavation unloading cause deterioration of rock constitutive relation and structure plane’s mechanical parameters, deformation mechanism of high layered dip rocky slope was analyses when rock is at unloading condition in this study. Its deformation consists of the two parts which are rock mass unloading rock mass springback displacement and bedding-slip displacement along the rock mass discontinuity, and deduced the calculating formula of slope displacement. Research results with great guide significance and practical engineering value to similar engineering construction afterward.
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Voloshyn, Oleksii, and Oleh Riabtsev. "Some important aspects of rock mechanics and geomechanics." E3S Web of Conferences 109 (2019): 00114. http://dx.doi.org/10.1051/e3sconf/201910900114.

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This work considers the analysis of important aspects of rock mechanics, such as the variability of the mechanical properties of rocks under the samples testing, the continuity of the rock mass and the deformation beyond the elastic limit, which have a great influence on the accuracy and reliability when conducting geomechanical studies of the rock mass during coal mining. The main methods for solving geomechanical problems are shown.
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Zhao, Kang, Shuijie Gu, Yajing Yan, Qiang Li, Wanqi Xiao, and Guoqing Liu. "Rock Mechanics Characteristics Test and Optimization of High-Efficiency Mining in Dajishan Tungsten Mine." Geofluids 2018 (August 13, 2018): 1–11. http://dx.doi.org/10.1155/2018/8036540.

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Rock mechanics test is not only the basis for obtaining the mechanical parameters of rock but also an important means for studying rock mechanics and engineering. In this paper, the uniaxial compression deformation test, Brazilian splitting test, and cornea pressure shear test are carried out for rocks in the Dajishan tungsten mine. The basic mechanical parameters such as uniaxial compressive strength, tensile strength, elastic modulus, Poisson’s ratio, and internal friction angle of ore rock and surrounding rock are obtained. Meanwhile, damage characteristics of rock are deeply studied and analyzed under different experimental conditions. According to rock mechanics parameters which are obtained from indoor rock mechanics tests, three design schemes of stope structure parameters are optimized by using the FLAC3D numerical simulation software. On the premise of ensuring the stability of the stope structure, the recovery rate of ore and the production capacity of the stope are taken into consideration. It is suggested that the second scheme should be adopted for mines (18 m for ore room and 7 m for ore pillar), which provides scientific guidance for the safe and efficient mining of mines.
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JOHNSTON, I. W., and E. A. NOVELLO. "SOIL MECHANICS, ROCK MECHANICS AND SOFT ROCK TECHNOLOGY." Proceedings of the Institution of Civil Engineers - Geotechnical Engineering 107, no. 1 (January 1994): 3–9. http://dx.doi.org/10.1680/igeng.1994.25715.

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Hu, Xuelong, Ming Zhang, Xiangyang Zhang, Min Tu, Zhiqiang Yin, Haifeng Ma, and Minke Duan. "A Coupled Elastoplastic Damage Dynamic Model for Rock." Shock and Vibration 2021 (October 4, 2021): 1–10. http://dx.doi.org/10.1155/2021/5567019.

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Rock dynamic constitutive model plays an important role in understanding dynamic response and addressing rock dynamic problems. Based on elastoplastic mechanics and damage mechanics, a dynamic constitutive model of rock coupled with elastoplastic damage is established. In this model, unified strength theory is taken as the yield criterion; to reflect the different damage evolution law of rocks under tension and pressure conditions, the effective plastic strain and volumetric plastic strain are used to represent the compressive damage variable and the equivalent plastic strain is used to represent the tensile damage variable; the plastic hardening behavior and strain rate effect of rocks are characterized by piecewise function and dynamic increase factor function, respectively; Fortran language and LS-DYNA User-Defined Interface (Umat) are used to numerically implement the constitutive model; the constitutive model is verified by three classical examples of rock uniaxial and triaxial compression tests, rock uniaxial tensile test, and rock ballistic test. The results show that the constitutive model can describe the dynamic and static mechanical behavior of rock comprehensively.
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Li, Hai Gang, Zhi Jun Yang, and Tong Lin Han. "Study on the Rockmass Instability of Open-Pit Mine by Block Theory and Numerical Simulation Methods." Applied Mechanics and Materials 353-356 (August 2013): 1077–81. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.1077.

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On the background of rock masses and field engineering geology of a mine, the feature of rock mechanics and rock mass structure of surrounding rock at mining district are analyzed. Based on the finite difference theory and block theory, FLAC3D program (Fast Lagrangian Analysis for Continuum), rock mechanic and rock mass structure results are used to construct the finite difference mechanical model, which reflected the surrounding rock stability when mining. By the numerical simulation, the mechanical effect is studied by the process of mining and its results can be used to produce some theory and actual basis.
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Zhang, Qiu Mei, Jin Tao Tang, and Hao Ma. "Analysis between Water Contain and Lithology." Applied Mechanics and Materials 744-746 (March 2015): 422–25. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.422.

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Water content has a great influence on the rock mechanics properties. Four kinds of rock samples have been tested in the MTS Electro hydraulic Tri-axial Servo Test System. The result shows that with the increase of water content, the rock uniaxial compressive strength and elastic modulus value are declining. We get the fitting equation between water content and rock mechanical properties with four kind of rocks, provide a new basis for slope stability analysis and landslide prevention and control measures.
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Ye, Yu, Li Li, and Xunjian Xu. "Physical and Mechanical Properties of Transmission Line Galloping under the Action of Freezing and Thawing in Variable Temperature Range." Advances in Civil Engineering 2021 (September 4, 2021): 1–10. http://dx.doi.org/10.1155/2021/8368289.

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The western part of our country is mostly alpine regions. The rock and soil have been in a strong natural freeze-thaw environment for a long time, and their physical and mechanical properties are easily affected by external loads and external surroundings. Changes due to the influence of the environment will inevitably produce freeze-thaw cycles, damage and destruction, expansion and fracture, etc., resulting in more stable factors than usual. However, there is a lack of theoretical and practical experience in freeze-thaw rocks, especially freeze-thaw hard rocks. Therefore, studying the physical and mechanical properties and damage characteristics of rocks in alpine regions under freeze-thaw cycles has important significance. This paper uses dacite in the alpine region to carry out a freeze-thaw cycle experiment in a variable temperature range. Freezing and thawing cycle test, uniaxial compression test, triaxial compression test, and electron microscope scanning of the rock in the indoor saturated state were carried out. Combining theory with experimental mechanics, freeze-thaw mechanics, and damage mechanics, we studied freeze-thaw cycle in three variable temperature ranges (−20°C–15°C; −30°C–15°C; −40°C–15°C), along with the physical and mechanical properties and damage characteristics of freeze-thaw dacite in the alpine region under cycling. The damage curve of the final theoretical model gradually approaches 1.0 with the increase of strain during the actual test. The rock sample after the medium failure still has a certain bearing capacity, and the rock sample is often destroyed before it reaches the theoretical failure strain.
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Dissertations / Theses on the topic "Rock mechanics"

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Lock, Yick-bun. "An examination of failure criteria for some common rocks in Hong Kong /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17665164.

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Wong, Wing-yee. "Permeability studies in rock fractures." View the Table of Contents & Abstract, 2002. http://sunzi.lib.hku.hk/hkuto/record/B30109334.

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Meyers, Anthony G. "The determination of rock mass strength for engineering design /." Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phm6134.pdf.

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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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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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Wong, Chi-ho Howard. "Parametric study for a cavern in jointed rock using a distinct element model /." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36616746.

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Lin, Qiaoxing. "Strength degradation and damage micromechanism of granite under long-term loading." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37115406.

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Akram, Muhammad. "The effect of zero point charge environment on rock fracture behavior." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-08142009-040230/.

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Douglas, Kurt John Civil &amp Environmental Engineering Faculty of Engineering UNSW. "The shear strength of rock masses." Awarded by:University of New South Wales. School of Civil and Environmental Engineering, 2002. http://handle.unsw.edu.au/1959.4/19138.

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The first section of this thesis (Chapter 2) describes the creation and analysis of a database on concrete and masonry dam incidents known as CONGDATA. The aim was to carry out as complete a study of concrete and masonry dam incidents as was practicable, with a greater emphasis than in other studies on the geology, mode of failure, and the warning signs that were observed. This analysis was used to develop a method of very approximately assessing probabilities of failure. This can be used in initial risk assessments of large concrete and masonry dams along with analysis of stability for various annual exceedance probability floods. The second and main section of this thesis (Chapters 3-6) had its origins in the results of Chapter 2 and the general interests of the author. It was found that failure through the foundation was common in the list of dams analysed and that information on how to assess the strength of the foundations of dams on rock masses was limited. This section applies to all applications of rock mass strength such as the stability of rock slopes. Methods used for assessing the shear strength of jointed rock masses are based on empirical criteria. As a general rule such criteria are based on laboratory scale specimens with very little, and often no, field validation. The Hoek-Brown empirical rock mass failure criterion was developed in 1980 for hard rock masses. Since its development it has become virtually universally accepted and is now used for all types of rock masses and in all stress regimes. This thesis uses case studies and databases of intact rock and rockfill triaxial tests collated by the author to review the current Hoek-Brown criterion. The results highlight the inability of the criterion to fit all types of intact rock and poor quality rock masses. This arose predominately due to the exponent a being restrained to approximately 0.5 to 0.62 and using rock type as a predictor of mi. Modifications to the equations for determining the Hoek-Brown parameters are provided that overcome these problems. In the course of reviewing the Hoek-Brown criterion new equations were derived for estimating the shear strength of intact rock and rockfill. Empirical slope design curves have also been developed for use as a preliminary tool for slope design.
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Books on the topic "Rock mechanics"

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Brady, B. H. G., and E. T. Brown. Rock Mechanics. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-8129-5.

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Wittke, Walter. Rock Mechanics. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-88109-1.

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Brady, B. H. G., and E. T. Brown. Rock Mechanics. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-011-6501-3.

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Charlez, Philippe A. Rock mechanics. Paris: Technip, 1991.

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A, Hudson J., ed. Indian rock mechanics. Oxford: Pergamon, 1994.

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A, Hudson J., and Hudson J. A, eds. Engineering rock mechanics. Oxford: Pergamon, 2000.

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Abbie, M. Rock mechanics: New research. Hauppauge, NY: Nova Science Publishers, 2009.

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O, Stephansson, ed. Thermo-hydro-mechanical coupling in rock mechanics. Oxford: Pergamon, 1995.

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Feng, Xia-Ting. Rock Mechanics and Engineering. Edited by Xia-Ting Feng. Leiden, The Netherlands; Boca Raton: CRC Press/Balkema, [2017]– |Includes bibliographical references and index. Contents: volume 1. Principles: CRC Press, 2017. http://dx.doi.org/10.1201/9781315364223.

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Kean, Atkinson Barry, ed. Fracture mechanics of rock. London: Academic Press, 1987.

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Book chapters on the topic "Rock mechanics"

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Hutchinson, D. Jean, and Mark Diederichs. "Rock Mechanics." In Encyclopedia of Earth Sciences Series, 1–3. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-12127-7_245-1.

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Liu, Hongqi. "Rock Mechanics." In Principles and Applications of Well Logging, 237–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-53383-3_8.

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Liu, Hongqi. "Rock Mechanics." In Principles and Applications of Well Logging, 237–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54977-3_8.

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Hutchinson, D. Jean, and Mark Diederichs. "Rock Mechanics." In Encyclopedia of Earth Sciences Series, 796–98. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73568-9_245.

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Perkins, Dexter, Kevin R. Henke, Adam C. Simon, and Lance D. Yarbrough. "Rock Mechanics." In Earth Materials, 493–513. Leiden, The Netherlands : CRC Press/Balkema, [2019]: CRC Press, 2019. http://dx.doi.org/10.1201/9780429197109-16.

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Brady, B. H. G., and E. T. Brown. "Blasting mechanics." In Rock Mechanics, 466–90. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-8129-5_17.

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Brady, B. H. G., and E. T. Brown. "Blasting mechanics." In Rock Mechanics, 433–58. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-011-6501-3_17.

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Wittke, Walter. "Introduction." In Rock Mechanics, 1–3. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-88109-1_1.

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Wittke, Walter. "Analysis of Three-dimensional Seepage Flow in a Rock Mass Using the Homogeneous Model and the Finite Element Method." In Rock Mechanics, 387–414. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-88109-1_10.

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Wittke, Walter. "Traffic Tunnels and Adits." In Rock Mechanics, 417–503. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-88109-1_11.

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Conference papers on the topic "Rock mechanics"

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"Fundamental rock mechanics." In The 2016 Isrm International Symposium, Eurock 2016. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315388502-15.

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Emad, M. Z., M. Waqas, and M. U. Khan. "Investigating the Impacts of Porosity on the Rock Mechanical Properties of Sandstone." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0578.

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ABSTRACT Laboratory testing of rocks and developing their interrelationships is a good way for assessment of rock behavior for mining and construction industries. A detailed testing program was envisaged to establish possible correlations between porosity and mechanical properties of sedimentary rocks from Salt range Punjab, Pakistan. Sandstone samples were collected from different formations of the salt range area. Sample preparation was carried out at the rock mechanics laboratory at UET Lahore as per suggested methods of ISRM. Samples with partings or defects were removed from the testing program. Acceptable samples were tested for porosity, density, UCS, BTS, and other properties. The test results obtained were used for statistical analysis to find possible correlations using MS Excel. The analysis showed that the rocks can be divided into two groups. The predictive relationships were determined between porosity and static mechanical properties of rocks, and between porosity and dynamic mechanical properties. INTRODUCTION Determination of geotechnical data for any engineering project is a key aspect of design and research. Laboratory investigation of rock involves carefully testing of rock samples after preparation in accordance with the ISRM or ASTM standards. Some examples of useful rock properties include but are not limited to uniaxial compressive strength (UCS), Young's modulus, Poisson's ratio, tensile strength, and sonic wave velocities through rocks. Some non-destructive tests like sonic velocity (P and S waves), porosity (η), and density (ρ) can be performed on same sample before the destructive tests like Youngs modulus (E), Poisson's ratio (υ), compressive and tensile strength (σt). Non-destructive tests are very popular in rock engineering as these are cheaper than the destructive tests and require almost no sample preparation. Rock mechanical tests are also used for geotechnical investigation for a project in rocky areas. The most important factors that affect the sonic velocity in rocks are type of rock, mineral arrangement, density, porosity, anisotropy, pore-water, confining pressure, temperature, weathering, texture, structure, grain size, and grain shape. Generally, the rock behavior under stress is governed by the factors like interlocking between grains, grain size, texture, composition, pores, arrangement of minerals and pores, and external factors like weathering, groundwater, nature of applied stress, etc. Rock mechanic professionals and researchers have produced good literature to determine and explain rock behavior through correlations (D’Andrea. 1965; Chang et al. 2006; Chary et al., 2006; Hashemi et al., 2010; Kahraman and Yeken, 2008; Khandelwal and Singh, 2011; Norouzi et al., 2013; Sabatakakis et al., 2008; Shalabi et al., 2007).
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Zhang, Yiheng, Xuhai Tang, Jingjing Xu, and Quansheng Liu. "Investigating the Minerals and Laboratory-Scale Property of Planetary Rocks Using AGBM." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0412.

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ABSTRACT The physical properties and mechanical behaviour of planetary rocks are critical parameters in the design of asteroid mining. Rock samples obtained by sample-return missions via spacecraft and meteorites collected in the earth are usually rare, fragmented and arbitrarily shaped. These samples are difficult to be processed into standard cylinders required by traditionally macroscale rock mechanics testing methods (e.g., MTS tests), leading to the use of microscale rock mechanics experiments to derive the macroscale Young's modulus of these samples. These microscale experiments have to then be upscaled to obtain macroscale values. The performances of three upscaling methods are considered, two are based on effective medium theory and the third is the computational method of accurate grain-based modeling (AGBM). These methods are compared in the context of granitic samples, and the errors these three methodologies are quantified. The AGBM is found to be the most accurate, and is subsequently extended to measure the mechanical properties of unconventional rock samples, Hammadah al Hamra 346 (HaH 346) asteroid meteorites. The microstructure, mineral composition and mechanical properties of rock-forming minerals and interphase in HaH 346 meteorites are measured using microscale rock mechanics experiment (micro-RME). Then, the macroscale Young's modulus of HaH 346 meteorites is upscaled and estimated using the validated AGBM method. The work is helpful for the characterization of the unconventional rock samples during asteroid mining. INTRODUCTION Asteroid mining involves the hypothetical exploration of materials from asteroids and other minor planets, including near-Earth objects. Metal-rich near-Earth asteroids provide the intriguing possibility that ferrum (Fe), nickel (Ni) and cobalt (Co) could someday be mined for use on Earth or in space (Hiroi et al., 1993). Therefore, understanding the deformation and failure properties of planetary rocks is critical to optimize construction activities beyond Earth (Gibney, 2018). The properties of asteroid rocks, such as composition, thermal parameters and magnetic properties, have been measured and are available in the literature (Flynn et al., 2018; Gattacceca et al., 2014; Krot et al., 2009; Ostrowski and Bryson, 2019). However, the strength measurements of asteroid rocks are scarce, mainly due to the destructive nature of traditional macroscale rock mechanics experiments (macro-RME). The physical properties of stony meteorites, including mechanical properties such as strength, provide important clues to understand the formation and physical evolution of material in the solar protoplanetary disk (Flynn et al., 2018; Pohl and Britt, 2020). However, asteroid samples (e.g. meteorites) are usually arbitrarily-shaped making it difficult to produce standard specimens (Shao et al., 2020) that are required by macro-RME. Recently, the microscale Rock Mechanics Experiment (micro-RME) and Accurate Grain-Based Models (AGBM) have been developed to investigate the mechanical properties of rock-forming minerals of arbitrarily-shaped rocks and their macroscale mechanical properties (Xu et al., 2020; Tang et al. 2022).
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Fu, Xinkang, Zhongwei Huang, Jinming Sun, Huaizhong Shi, Jiawei Zhang, Guodong Ji, and Hengyu Song. "Numerical Simulation on Damage Characteristics of Carbonate Rock Under Axial-Torsional Coupled Impact by PDC Cutters." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0593.

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ABSTRACT Carbonate rock is an important oil and gas reservoir rock. Deep carbonate rocks are of high strength, hardness, abrasiveness and poor drillability, which will cause various problems as follows: PDC cutter collapse, serious wear and low drilling efficiency. Axial-torsional coupled percussive drilling can improve the drilling speed of deep hard rocks including carbonate rock. Therefore, a numerical model of axial-torsional coupled impact rock breakage was established for carbonate rocks. The damage characteristics of carbonate rock caused by spherical cutter and axe-shaped cutter under different impact parameters were analyzed. The simulation results reveal that the impact force of two kinds of cutters increases with the increase of impact speed. The torque of PDC cutters increases with the increase of torque amplitude. Under the same conditions, the tensile damage of carbonate rock caused by axe-shaped cutter is more obvious under the action of axial-torsional coupled impact and the tensile damage area under axe-shaped cutter tends to be connected. Additionally, the damage caused by PDC cutter to carbonate rocks is mainly tensile damage, supplemented by compressive damage. This work is instructive in revealing the effect of PDC cutter on breaking carbonate rocks under different impact parameters. INTRODUCTION As an important oil and gas reservoir rock, 50% of the world's proven oil and gas resources are stored in carbonate rocks (Al-Shargabi et al., 2022). Deep carbonate rocks are of high strength, hardness, abrasiveness and poor drillability. Conventional rotary bit drilling method has many problems in rock breaking, such as serious wear and low drilling efficiency (Jamali et al., 2019). Axial-torsional coupled percussive drilling has higher penetration rate in breaking hard rock, such as carbonate rock (Saai et al., 2020). And some oil companies designed some special-shaped PDC cutters (Zhu et al., 2022), such as axe-shaped cutter and spherical cutter. However, the characteristics of breaking carbonate rock by PDC cutters under the action of axial-torsional coupled impact is not clear. Therefore, it is of great significance to investigate the effect of different impact parameters on breaking carbonate rock by PDC cutters under the action of axial-torsional coupled impact.
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"Rock properties, experimental rock mechanics and physical modelling." In The 2016 Isrm International Symposium, Eurock 2016. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315388502-22.

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Nordlund, Erling. "Deep hard rock mining and rock mechanics challenges." In Seventh International Symposium on Ground Support in Mining and Underground Construction. Australian Centre for Geomechanics, Perth, 2013. http://dx.doi.org/10.36487/acg_rep/1304_02_nordlund.

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Lempp, Ch, O. Natau, U. Bayer, and D. H. Welte. "The effect of temperature on rock mechanical properties and fracture mechanisms in source rocks - Experimental results." In Rock Mechanics in Petroleum Engineering. Society of Petroleum Engineers, 1994. http://dx.doi.org/10.2118/28039-ms.

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Li, Wenfeng, Chelsea W. Neil, Philip H. Stauffer, J. William Carey, Meng Meng, and Luke P. Frash. "Characterization of Gas Transport in Fractured Rocks for Underground Nuclear Explosion Detection." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0308.

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ABSTRACT Underground nuclear explosions produce noble gases that can migrate to the surface and become detectable by atmospheric monitoring tools. However, it is challenging to predict radionuclide gas migration in the complex engineered and natural subsurface systems due to several issues. These issues include generation of complex fracture networks near an engineered cavity, reactivation of natural fractures, coupled hydro-thermo-mechanical processes for transport of high-pressure gases in a fractured porous rock system. To improve our understanding of these technical challenges, we used a triaxial direct shear test scheme to characterize coupled hydro-mechanical gas transport in fractured porous rocks. In the experiments, we tested nitrogen (an analog noble gas) flow through two types of rocks with distinct petrophysical properties: porous Bandelier tuff and tight Climax stock granite. For each type, we measured the Biot effective stress coefficient, the rock matrix permeability, and the fracture permeability under various stress states, which allowed us to examine the stress-dependency of the Biot coefficient and investigate rock matrix-fracture interactions for transport of pressurized gas. Comparing the experimental results for the two distinct rock types, we observed some important findings for gas transport in fractured rocks. First, rock fracturing does not necessarily increase samples’ gas permeability when the rock matrix is highly porous. Furthermore, gas permeability of intact rocks can show strong exponential stress dependency even when the rock matrix is very tight. Additionally, Biot effective stress coefficients are not necessarily close to unity for highly porous rocks, especially when rocks are subjected to large effective stresses. In summary, the experimental results can be used to improve the physics in high-fidelity numerical modeling to elevate our understanding of radionuclide gas transport in fractured porous rocks after an underground nuclear explosion event. INTRODUCTION Surface radionuclide monitoring is the primary means of determining if an underground explosion is nuclear in nature (Maceira et al., 2017). Following an underground nuclear explosion (UNE), signature noble gas radionuclides, such as Xe-131m, Xe-133, Xe-135, and some krypton radioisotopes, will be produced by nuclear fission (Carrigan et al., 1996; De Geer, 1996; Sun and Carrigan, 2014). They are hard to contain and tend to seep from the underground explosion and migrate to the surface. Surface sampling and detection of these signature gaseous radionuclides, when above some background levels, is a strong indicator of the occurrence of an underground nuclear explosion. By comparison, seismic monitoring cannot definitively discriminate between chemical (for example, TNT) explosions and nuclear events. It is thus important to understand transport of noble gas radionuclides in the subsurface rock strata.
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Yang, H., G. L. Cai, and Q. Zhao. "The Role of Water in the Dynamic Mechanical Behaviors of a Granitic Rock." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0179.

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ABSTRACT Rock masses are frequently exposed to dynamic stress perturbations associated with natural events (e.g., earthquakes, landslides, and rock bursts) and engineering operations (e.g., blasting, explosion, and induced earthquakes). Understanding the dynamic mechanical characteristics of rock masses is essential to many geo-engineering applications such as underground excavation and hydrocarbon energy exploitation. Water is ubiquitous in the Earth's crust and plays a vital role in the dynamic mechanical behaviors of rock masses; hoever, the effects of water on the dynamic mechanical characteristics of rocks are still not fully understood. Therefore, it is necessary to carry out more dynamic tests to understand their mechanical responses to the presence of water. To this end, we conduct dynamic uniaxial compressive tests on dry and water-saturated granite rock samples via the split Hopkinson pressure bar (SHPB) technique. The test results demonstrate the strain rate dependence of dynamic mechanical properties of both dry and water-saturated granite rock specimens. The presence of water lowers the dynamic compressive strength and elastic modulus of granite rock specimens. The dynamic increase factor (DIF), characterizing the strain rate sensitivity of dynamic mechanical properties, for wet granite rock specimens is higher than that for dry ones over the tested strain rate range. These findings improve our understanding of the water effects on the dynamic mechanical behaviors of granite rocks. INTRODUCTION Dynamic loading is commonly encountered in natural activities, such as earthquakes and volcanic eruptions, and in engineering operations, such as rock blasting and hydraulic fracturing (Elsworth et al., 2016; Zhang & Zhao, 2014; Bažant & Caner, 2013). Such dynamic disturbance could strongly affect the mechanical behaviors of rock masses, causing the deterioration and damage of rock supports and structures. Understanding the dynamic mechanical behaviors of rocks is therefore essential for the design, construction, and maintenance of tunnels and caverns, defense and military infrastructures, mining facilities, etc. (Li et al., 2017; Qian & Lin, 2016; Zhao et al., 1999). Moreover, dynamic loading at high strain rates could be one of the origins of rock pulverization identified near the active faults, a marker of coseismic damage due to strong earthquakes (Aben et al., 2017; Doan & Gary, 2009). The knowledge concerning rock mechanical responses to dynamic loading could provide insights into rock pulverization, advancing the understanding of earthquake physics and seismic faults (Smith & Griffith, 2022; Griffith et al., 2018; Aben et al., 2016). In this context, more and more attention has been paid to the mechanical behaviors of rocks subjected to dynamic stresses.
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Li, Peng, Meifeng Cai, and Fenhua Ren. "Fracture Behavior of Jointed Rocks Subjected to Static Compressive Loads: An Overview." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0364.

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ABSTRACT Joints widely distributed in rock masses can possess a noticeable influence on, or even dominate, the mechanical response and fracture behavior of the rock mass. Consequently, considerable efforts have been made to explain the mechanisms involved. This article provides an overview of the mechanical properties, fracturing processes, and failure patterns of jointed rocks, which have been investigated through experimental and numerical tests. The results of these tests indicate that, under the action of static compressive load, the existence of flaws changes the stress distribution mode in jointed rocks, resulting in noticeable anisotropic characteristics. The crack evolution is mainly caused by the redistribution of stress due to the inclusion of joints. Furthermore, the fracturing process of jointed rocks often occurs at the tips of pre-existing microcracks and joints, which can lead to different failure modes. Additionally, the mechanical parameters, fracture process, and failure modes vary depending on the geometry and configuration (such as dip angle, length, and layout) of the joints. Finally, some prospects for studying the fracture behavior of jointed rocks are proposed. This work is expected to contribute to disaster prevention and mitigation in underground projects. INTRODUCTION The rock mass is the primary construction object for underground projects such as mining, nuclear waste treatment, carbon sequestration, and oil and gas reservoir development. The natural rock mass is a complex and inhomogeneous geological body existing in nature (Sagong et al., 2011). After long-term geological tectonic evolution, the crust is randomly distributed with different scales and directions of structural surfaces or discontinuities (such as faults, bedding planes, joints, splits, slits, soft interlayers, and holes), which intersect in the rock mass and form a special structure of discontinuous body (Li et al., 2021; Li and Cai, 2021). They will have a great effect on the mechanical behavior of the rock mass. Numerous studies indicated that many instabilities of jointed rocks are caused by nucleation, expansion, and coalescence of joints, resulting in a large number of deaths and huge losses of material wealth. For example, the typical wedge-shaped destruction along the fault on the steep slope of the Three Gorges Project and the step-type destruction of the rock slope at the Xiaowan Hydropower Station in China are all related to the joints in the rock mass (Huang et al., 2018). These disasters have seriously restricted the safe and stable development of rock engineering.
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Reports on the topic "Rock mechanics"

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Francke, C., and S. Saeb. Rock mechanics activities at the Waste Isolation Pilot Plant. Office of Scientific and Technical Information (OSTI), December 1996. http://dx.doi.org/10.2172/515494.

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Plesha, Michael E., and Bezalel C. Haimson. An Investigation of the Mechanics of Discontinuities in Rock. Fort Belvoir, VA: Defense Technical Information Center, March 1990. http://dx.doi.org/10.21236/ada220244.

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Hardy, R. D. Event triggered data acquisition in the Rock Mechanics Laboratory. Office of Scientific and Technical Information (OSTI), March 1993. http://dx.doi.org/10.2172/10177063.

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Udd, J. E. An overview of developments in rock mechanics in Canada - 1983-1987. Natural Resources Canada/CMSS/Information Management, 1987. http://dx.doi.org/10.4095/328600.

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Hedley, D. G. H., and J. E. Udd. Index of rock mechanics research reports: CANMET/mining research laboratories, 1964-1984. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/305053.

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Hardy, R. D. Event triggered data acquisition in the Rock Mechanics Laboratory upgrades and revisions. Office of Scientific and Technical Information (OSTI), June 1997. http://dx.doi.org/10.2172/505267.

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Joseph, P. G., H. H. Einstein, and R. V. Whitman. A Literature Review of Geotechnical Centrifuge Modeling with Particular Emphasis on Rock Mechanics. Fort Belvoir, VA: Defense Technical Information Center, June 1988. http://dx.doi.org/10.21236/ada213793.

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Francois Heuze, Peter Smeallie, Derek Elsworth, and Joel L. Renner. Rock Mechanics and Enhanced Geothermal Systems: A DOE-sponsored Workshop to Explore Research Needs. Office of Scientific and Technical Information (OSTI), October 2003. http://dx.doi.org/10.2172/910628.

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Aston, T. R. C. Sixth international congress on rock mechanics, 1987 - post congress tour information, Sydney Coalfield, N.S. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/304871.

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Michael S. Bruno. Fundamental Research on Percussion Drilling: Improved rock mechanics analysis, advanced simulation technology, and full-scale laboratory investigations. Office of Scientific and Technical Information (OSTI), December 2005. http://dx.doi.org/10.2172/886017.

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