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Jun Peng
College of Civil Engineering, Qilu Institute of Technology, Jinan, People’s Republic of China

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Technical note
Published: 24 July 2021 in Rock Mechanics and Rock Engineering
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ACS Style

Xiaoshuang Li; Kun Peng; Jun Peng; Hanhua Xu. Effect of Cyclic Wetting–Drying Treatment on Strength and Failure Behavior of Two Quartz-Rich Sandstones Under Direct Shear. Rock Mechanics and Rock Engineering 2021, 1 -8.

AMA Style

Xiaoshuang Li, Kun Peng, Jun Peng, Hanhua Xu. Effect of Cyclic Wetting–Drying Treatment on Strength and Failure Behavior of Two Quartz-Rich Sandstones Under Direct Shear. Rock Mechanics and Rock Engineering. 2021; ():1-8.

Chicago/Turabian Style

Xiaoshuang Li; Kun Peng; Jun Peng; Hanhua Xu. 2021. "Effect of Cyclic Wetting–Drying Treatment on Strength and Failure Behavior of Two Quartz-Rich Sandstones Under Direct Shear." Rock Mechanics and Rock Engineering , no. : 1-8.

Journal article
Published: 19 July 2021 in Sustainability
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Taking the “11.28” rockburst occurred in the Jinping II Hydropower Station as the engineering background, the evolution mechanism of structure-type rockburst was studied in detail based on the particle flow code. The results indicate that the failure mechanism of structure-type rockburst includes a tensile fracture induced by tangential compressive stress and a shear fracture caused by shear stress due to overburdened loadings and shear slip on the structural plane. In addition, it is found that the differences between structure-type rockburst and strainburst mainly include (a) the distribution of the local concentrated stress zone after excavation, (b) the evolution mechanism, and (c) the failure locations. Finally, the influence of four factors on the structure-type rockburst are explored. The results show that (1) when the friction coefficient is greater than 0.5, the effect of structural plane is weakened, and the rock near excavation tends to be intact, the structural-type rockburst intensity decreases; (2) the dissipated and radiated energy in structural-type rockburst reduces with rockmass heterogeneity m; (3) the lateral pressure coefficient has a significant effect on the intensity of deep rock failure, specifically in the form of the rapid growth in dissipative energy; (4) and the structural-type rockburst is more pronounced at a structural plane length near 90 mm.

ACS Style

Chenxi Zhang; Diyuan Li; Shunchuan Wu; Long Chen; Jun Peng. Study on Evolution Mechanism of Structure-Type Rockburst: Insights from Discrete Element Modeling. Sustainability 2021, 13, 8036 .

AMA Style

Chenxi Zhang, Diyuan Li, Shunchuan Wu, Long Chen, Jun Peng. Study on Evolution Mechanism of Structure-Type Rockburst: Insights from Discrete Element Modeling. Sustainability. 2021; 13 (14):8036.

Chicago/Turabian Style

Chenxi Zhang; Diyuan Li; Shunchuan Wu; Long Chen; Jun Peng. 2021. "Study on Evolution Mechanism of Structure-Type Rockburst: Insights from Discrete Element Modeling." Sustainability 13, no. 14: 8036.

Original paper
Published: 19 June 2021 in Arabian Journal of Geosciences
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Due to difference in mineral composition, cementation, and porosity, the strength behavior of sandstone after exposure to different high temperatures is complex. From literature review, it is found that a transition temperature in the treatment exists at which the strength of sandstone changes from slow increase or decrease to fast decrease. This paper studies the effect of high temperature treatment on mechanical behavior of a fine-grained sandstone with a focus on discussion of the controlling factor that affects the various strength behavior of sandstone in response to thermal loading. The results in this study show that the transition temperature is about 500 °C for the examined sandstone. When the treatment temperature is below 500 °C, the Brazilian tensile strength (BTS), uniaxial compressive strength (UCS), and elastic modulus increase with increasing temperature in the treatment. However, when the treatment temperature exceeds 500 °C, the three parameters are found to decrease with a further increase in the treatment temperature. The relation between brittleness and treatment temperature is also examined. The brittleness indices B3 and B4 are found to be more effective than B1 and B2 to assess the brittleness of thermally damaged rock. The results in this study are useful for better understanding the mechanism of thermal damage effect on strength behavior of sandstone.

ACS Style

Xiaoshuang Li; Kun Peng; Jun Peng; Di Hou. Effect of thermal damage on mechanical behavior of a fine-grained sandstone. Arabian Journal of Geosciences 2021, 14, 1 -12.

AMA Style

Xiaoshuang Li, Kun Peng, Jun Peng, Di Hou. Effect of thermal damage on mechanical behavior of a fine-grained sandstone. Arabian Journal of Geosciences. 2021; 14 (13):1-12.

Chicago/Turabian Style

Xiaoshuang Li; Kun Peng; Jun Peng; Di Hou. 2021. "Effect of thermal damage on mechanical behavior of a fine-grained sandstone." Arabian Journal of Geosciences 14, no. 13: 1-12.

Journal article
Published: 11 August 2020 in Computers and Geotechnics
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Mechanical properties of crystalline rock are greatly affected by its micro-structures which are characterized as highly-interlocked polygon grains and presence of micro-defects. Due to insufficient consideration of micro-structures in crystalline rock, previous simulations using discrete element method (DEM) cannot realistically reproduce the mechanical properties of crystalline rock including crack closure behaviour and high ratio of uniaxial compressive strength (UCS) against tensile strength (TS). The irregular shape of minerals in crystalline rock is modelled by discrete element method (DEM) using grain-based model (GBM). Presence of initial cracks is incorporated into GBM by introducing two notional contact surfaces to model gradual closure behaviour under compressive loading, and to obtain a higher UCS/TS ratio. The stress-strain response and crack evolution including crack closure, crack initiation, crack coalescence as well as development of macroscopic shear failure can be realistically reproduced with the proposed model. A calibration procedure is proposed to match properties of Remiremont granite under room temperature. The influence of initial cracks on the rock is then comprehensively studied. The simulation results show a good agreement with the experimental outputs under various treatment temperatures. By modelling the polygon grain and pre-existing cracks, the simulated UCS/TS ratio can be more realistic and increased up to a value of 49.

ACS Style

Xiao-Ping Zhang; Pei-Qi Ji; Jun Peng; Shun-Chuan Wu; Qi Zhang. A grain-based model considering pre-existing cracks for modelling mechanical properties of crystalline rock. Computers and Geotechnics 2020, 127, 103776 .

AMA Style

Xiao-Ping Zhang, Pei-Qi Ji, Jun Peng, Shun-Chuan Wu, Qi Zhang. A grain-based model considering pre-existing cracks for modelling mechanical properties of crystalline rock. Computers and Geotechnics. 2020; 127 ():103776.

Chicago/Turabian Style

Xiao-Ping Zhang; Pei-Qi Ji; Jun Peng; Shun-Chuan Wu; Qi Zhang. 2020. "A grain-based model considering pre-existing cracks for modelling mechanical properties of crystalline rock." Computers and Geotechnics 127, no. : 103776.

Research article
Published: 29 March 2020 in International Journal of Damage Mechanics
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Pore-like flaws, which are commonly encountered in brittle rock, play an important role in the engineering performance of structures constructed in or on rock. Experimental and numerical investigations of micro-cracking mechanism of rock containing a pore-like flaw can enhance our knowledge of rock damage/failure from a microscopic view. In this study, the influences of a two-dimensional circular pore-like flaw with respect to its diameter and position on the strength and micro-cracking behavior of brittle rock under uniaxial compression are numerically investigated. The results reveal that the strength and elastic modulus are significantly affected by the diameter and position in the pore. The uniaxial compressive strength and elastic modulus of the numerical model with a pore diameter of 15.44 mm located in the center of the model are found to decrease by 58.6% and 56.4% respectively when compared with those of the intact model without a pore. As the pore position varies while the porosity remains unchanged, the simulated uniaxial compressive strength and elastic modulus are also found to be generally smaller than those of the intact model without a pore. When a pore-containing numerical model is loaded, the micro-cracks are found to mostly initiate at the top and bottom of the pore, due to the local tensile stress increase. The simulation results of the early-stage micro-cracking process and stress distribution are in a generally good agreement with the analytical solution obtained from the Kirsch equations. The grain-based model used in this study can not only study the crack initiation on the boundary of the pore but also provide a convenient means to analyze and visualize the temporal and spatial micro-cracking process after the crack initiation, which accounts for the variations in the simulated strength and modulus satisfactorily from a micro-cracking view.

ACS Style

Louis Ngai Yuen Wong; Jun Peng. Numerical investigation of micro-cracking behavior of brittle rock containing a pore-like flaw under uniaxial compression. International Journal of Damage Mechanics 2020, 29, 1543 -1568.

AMA Style

Louis Ngai Yuen Wong, Jun Peng. Numerical investigation of micro-cracking behavior of brittle rock containing a pore-like flaw under uniaxial compression. International Journal of Damage Mechanics. 2020; 29 (10):1543-1568.

Chicago/Turabian Style

Louis Ngai Yuen Wong; Jun Peng. 2020. "Numerical investigation of micro-cracking behavior of brittle rock containing a pore-like flaw under uniaxial compression." International Journal of Damage Mechanics 29, no. 10: 1543-1568.

Journal article
Published: 27 December 2019 in Journal of Natural Gas Science and Engineering
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Natural oil-gas-bearing rock formation generally contains a large number of discontinuities, which have a large influence on the cracking process inside the rock under high water pressure condition. Hence, a good understanding of the propagation and coalescence of fluid-driven cracks is important to improve the oil and gas exploitation efficiency. This study numerically investigates the fluid-driven crack propagation process in rock specimen possessing two pre-existing flaws using a fluid coupled discrete element method. The micro-parameters are first calibrated against the mechanical properties of the Lac du Bonnet granite. The numerical specimen models are generated by installing two flaws with different ligament angles, ligament length, and flaw angles. The injection test with a constant rate is then conducted to study the propagation and coalescence patterns in these pre-cracked numerical models. The numerical results show that a relatively large ligament angle is better to accelerate the crack coalescence in the specimen with two paralleled flaws. Numerical model possessing two pre-existing flaws with a small ligament length is inclined to traverse the ligament area. Overall, the results in this study reveal that the pre-existing flaws inside the rock have a significant effect on the fluid-driven cracking process and much attention should be paid to the crack propagation behavior when many discontinuities are associated in the oil-gas-bearing rock formation.

ACS Style

Guang Liu; Jun Peng; Zhenhua Zhang; Zhiliang Wang; Yi Yang. Numerical investigation of fluid-driven crack propagation and coalescence in granite specimen with two pre-existing flaws. Journal of Natural Gas Science and Engineering 2019, 75, 103132 .

AMA Style

Guang Liu, Jun Peng, Zhenhua Zhang, Zhiliang Wang, Yi Yang. Numerical investigation of fluid-driven crack propagation and coalescence in granite specimen with two pre-existing flaws. Journal of Natural Gas Science and Engineering. 2019; 75 ():103132.

Chicago/Turabian Style

Guang Liu; Jun Peng; Zhenhua Zhang; Zhiliang Wang; Yi Yang. 2019. "Numerical investigation of fluid-driven crack propagation and coalescence in granite specimen with two pre-existing flaws." Journal of Natural Gas Science and Engineering 75, no. : 103132.

Original paper
Published: 05 December 2019 in Rock Mechanics and Rock Engineering
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There is a growing demand of knowledge on the behavior of rock masses after thermal treatment in both academic and practical aspects due to the high demand of construction of underground structures under the high-temperature environment. The peak shear strength of rock joints has a significant role in evaluating the stability problems of surrounding rocks. However, there is a lack of information about the temperature-dependent nature of the basic friction angle of rock joints, which serves as an essential parameter to evaluate the peak shear strength. The present study experimentally investigates the influences of temperature magnitude (20, 200, 400, 600, and 800 °C) on the basic friction angle of granite, marble, and red sandstone joints. The basic friction angles of the three kinds of rock joints exhibit linear trends with the increase in the treatment temperature. The basic friction angles of granite and red sandstone joints increase with the increase in the treatment temperature, while the values for marble joints continually decrease. The mechanisms for the thermally altered variations in the basic friction angle of rock joint are mainly related to dehydration process, uneven expansion of mineral grains, thermally weakened asperities distributed on the surfaces, and change in physical and mechanical properties of minerals. In addition, other test conditions, including tilting rate, specimen size, repetition number, and cooling rate, are also analyzed. The present study provides useful data in establishing a peak shear strength criterion for rock joints by considering the temperature effect.

ACS Style

Zhi Cheng Tang; Qing Zhao Zhang; Jun Peng. Effect of Thermal Treatment on the Basic Friction Angle of Rock Joint. Rock Mechanics and Rock Engineering 2019, 53, 1973 -1990.

AMA Style

Zhi Cheng Tang, Qing Zhao Zhang, Jun Peng. Effect of Thermal Treatment on the Basic Friction Angle of Rock Joint. Rock Mechanics and Rock Engineering. 2019; 53 (4):1973-1990.

Chicago/Turabian Style

Zhi Cheng Tang; Qing Zhao Zhang; Jun Peng. 2019. "Effect of Thermal Treatment on the Basic Friction Angle of Rock Joint." Rock Mechanics and Rock Engineering 53, no. 4: 1973-1990.

Journal article
Published: 23 May 2019 in Engineering Geology
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The paper presents an experimental study on the effects of water on the shear behaviors of sandstone joints collected from middle region of Yunnan province. A series of direct shear tests on specimens with different immersion time in water were performed under the constant normal loading condition. Experimental results showed that the peak shear strength of the sandstone joints can be lowered by about 50% due to immersed in water for 32 days. Under the low normal loading condition, the peak shear strength declined until the immersion time up to 8 days and beyond the point onward, the values were not sensitive to the immersion time. Under the high normal loading condition, we can observe a decline trend in the peak shear strength and the influence of water became less prominent with the increase of immersion time. The effect of water on the peak shear displacement was less obvious as the normal stress is low, while it increased with the increase in immersion time under the high normal loading condition. The variations of residual shear displacement exhibited fluctuation as the immersion time increased and no obvious regularity can be observed. Shear-induced normal displacement during the process of shearing generally switched from dilatancy to contraction (negative dilatancy) as immersion time increased. Water-induced reduction in secant shear stiffness under the normal stresses of 2.0 and 4.0 MPa can be observed for specimens immersed in water for 2 days, and beyond the point onward the stiffness decreased slightly with the increase of immersion time. One of possible weakening mechanisms would be related to the fracture energy and the friction coefficient of the cement particles within the intact block, and the other would be related to the capillary forces and the chemical and/or physio-chemical effects among contact particles distributed on the surfaces.

ACS Style

Zhi Cheng Tang; Qing Zhao Zhang; Jun Peng; Yu Yong Jiao. Experimental study on the water-weakening shear behaviors of sandstone joints collected from the middle region of Yunnan province, P.R. China. Engineering Geology 2019, 258, 105161 .

AMA Style

Zhi Cheng Tang, Qing Zhao Zhang, Jun Peng, Yu Yong Jiao. Experimental study on the water-weakening shear behaviors of sandstone joints collected from the middle region of Yunnan province, P.R. China. Engineering Geology. 2019; 258 ():105161.

Chicago/Turabian Style

Zhi Cheng Tang; Qing Zhao Zhang; Jun Peng; Yu Yong Jiao. 2019. "Experimental study on the water-weakening shear behaviors of sandstone joints collected from the middle region of Yunnan province, P.R. China." Engineering Geology 258, no. : 105161.

Journal article
Published: 06 September 2018 in Energies
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High temperature treatment has a significant influence on the mechanical behavior and the associated microcracking characteristic of rocks. A good understanding of the thermal damage effects on rock behavior is helpful for design and stability evaluation of engineering structures in the geothermal field. This paper studies the mechanical behavior and the acoustic emission (AE) characteristic of three typical rocks (i.e., sedimentary, metamorphic, and igneous), with an emphasis on how the difference in rock type (i.e., porosity and mineralogical composition) affects the rock behavior in response to thermal damage. Compression tests are carried out on rock specimens which are thermally damaged and AE monitoring is conducted during the compression tests. The mechanical properties including P-wave velocity, compressive strength, and Young’s modulus for the three rocks are found to generally show a decreasing trend as the temperature applied to the rock increases. However, these mechanical properties for quartz sandstone first increase to a certain extent and then decrease as the treatment temperature increases, which is mainly attributed to the high porosity of quartz sandstone. The results obtained from stress–strain curve, failure mode, and AE characteristic also show that the failure of quartz-rich rock (i.e., quartz sandstone and granite) is more brittle when compared with that of calcite-rich rock (i.e., marble). However, the ductility is enhanced to some extent as the treatment temperature increases for all the three examined rocks. Due to high brittleness of quartz sandstone and granite, more AE activities can be detected during loading and the recorded AE activities mostly accumulate when the stress approaches the peak strength, which is quite different from the results of marble.

ACS Style

Jun Peng; Sheng-Qi Yang. Comparison of Mechanical Behavior and Acoustic Emission Characteristics of Three Thermally-Damaged Rocks. Energies 2018, 11, 2350 .

AMA Style

Jun Peng, Sheng-Qi Yang. Comparison of Mechanical Behavior and Acoustic Emission Characteristics of Three Thermally-Damaged Rocks. Energies. 2018; 11 (9):2350.

Chicago/Turabian Style

Jun Peng; Sheng-Qi Yang. 2018. "Comparison of Mechanical Behavior and Acoustic Emission Characteristics of Three Thermally-Damaged Rocks." Energies 11, no. 9: 2350.

Journal article
Published: 01 August 2018 in Applied Thermal Engineering
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High temperature associated with geothermal fields affects the performance of bedrocks. Evaluation of physical and mechanical behavior of rocks in the process of thermal cycling at high temperature is one of the main issue in this application, which is also the main topic of the present study. In this study, microscopic observation and uniaxial compression tests with acoustic emission (AE) monitoring were conducted on two bedrocks (i.e., marble and granite) after treatment with different thermal cycles at high temperature. It is found that the P-wave velocity decreases as the number of thermal cycle increases. The characteristic stress levels and Young’s modulus decrease with the increase of the number of thermal cycle in the treatment. The peak strain and the maximum volumetric strain show an increasing trend as the number of thermal cycle increases. After failure, more fragments are observed in specimens treated with more thermal cycles and the integrity is also found to be lower than specimens treated with less thermal cycles. The AE technique is able to capture the failure process and the associated micro-cracking behavior during loading. The degradation of macro-properties of the rocks is to a large extent attributed to the generation of grain boundary and intra-grain micro-cracks inside the rock specimens due to the applied thermal stress. Overall, the thermal cycling weakens the mechanical properties of rocks; however, the weakening effect will become not pronounced with the increase of the number of thermal cycle in the treatment if a high temperature is applied as in this study (i.e., 600 °C).

ACS Style

Guan Rong; Jun Peng; Ming Cai; Mengdi Yao; Chuangbing Zhou; Song Sha. Experimental investigation of thermal cycling effect on physical and mechanical properties of bedrocks in geothermal fields. Applied Thermal Engineering 2018, 141, 174 -185.

AMA Style

Guan Rong, Jun Peng, Ming Cai, Mengdi Yao, Chuangbing Zhou, Song Sha. Experimental investigation of thermal cycling effect on physical and mechanical properties of bedrocks in geothermal fields. Applied Thermal Engineering. 2018; 141 ():174-185.

Chicago/Turabian Style

Guan Rong; Jun Peng; Ming Cai; Mengdi Yao; Chuangbing Zhou; Song Sha. 2018. "Experimental investigation of thermal cycling effect on physical and mechanical properties of bedrocks in geothermal fields." Applied Thermal Engineering 141, no. : 174-185.

Journal article
Published: 25 June 2018 in Geophysical Journal International
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Thermal damage, which is a typical damage form in the fields of geothermal energy extraction and nuclear waste disposal, seriously affects the transport characteristic and stability of candidate rocks. This study experimentally investigates the influence of initial thermal cracking on the mechanical properties of a coarse-grained marble. Uniaxial compression tests with acoustic emission (AE) monitoring were conducted on marble specimens after exposure to different temperatures. The physical and mechanical properties include porosity, P-wave velocity, rock strength, Young's modulus, and Poisson's ratio, as well as the AE characteristics are then examined and discussed. It is found from thin section observation that the number of micro-cracks inside the specimen gradually increases with the increase in the treatment temperature, which is in good agreement with the results of the P-wave velocity and the effective porosity. The uniaxial compressive strength (UCS) and Young's modulus are found to decrease as the temperature in the treatment increases, while the Poisson's ratio gradually increases. Overall, the thermal treatment decreases the brittleness and increases the ductility of the rock specimen. In addition, the accumulated AE data correspond well with the recorded stress-strain curve and the failure planes determined from source location using AE are comparable with those observed in laboratory testing. Finally, a constitutive model based on AE data is established to capture the stress-strain relations after treatment with different temperature. The results show that the stress-strain curves interpreted from the proposed constitutive model agree well with those recorded in laboratory tests.

ACS Style

Guan Rong; Mengdi Yao; Jun Peng; Song Sha; Jie Tan. Influence of initial thermal cracking on physical and mechanical behavior of a coarse marble: Insights from uniaxial compression tests with acoustic emission monitoring. Geophysical Journal International 2018, 1 .

AMA Style

Guan Rong, Mengdi Yao, Jun Peng, Song Sha, Jie Tan. Influence of initial thermal cracking on physical and mechanical behavior of a coarse marble: Insights from uniaxial compression tests with acoustic emission monitoring. Geophysical Journal International. 2018; ():1.

Chicago/Turabian Style

Guan Rong; Mengdi Yao; Jun Peng; Song Sha; Jie Tan. 2018. "Influence of initial thermal cracking on physical and mechanical behavior of a coarse marble: Insights from uniaxial compression tests with acoustic emission monitoring." Geophysical Journal International , no. : 1.

Journal article
Published: 01 May 2018 in Journal of Natural Gas Science and Engineering
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Mineralogical composition has a great influence on the mechanical behavior and the micro-cracking process of crystalline rocks for CO2 and natural gas storage. This study numerically investigates the influence of mineralogical composition (i.e., quartz content) of a dominantly felsic phaneritic igneous rock with respect to rock strength and the associated micro-cracking behavior using a grain-based modeling approach in two-dimensional Particle Flow Code (PFC2D). First, numerical specimen models with different mineralogical compositions are generated. The generated numerical models have the same geometry of the assembled grain structure to minimize the effect of grain scale heterogeneity on the simulation results. Micro-parameters previously calibrated to match the macro-properties of the Bukit Timah granite are then assigned to the numerical models. In the numerical simulation of uniaxial compression tests, the strength and Young's modulus are found to increase with the increase of quartz content in the numerical model, while the Poisson's ratio and the maximum volumetric strain gradually decrease. The simulated strength behavior is in good agreement with the laboratory test results obtained from previous studies. However, the crack damage stress seems not to be affected by the quartz content. The total number of generated micro-cracks is also found to gradually increase as the quartz content in the numerical model increases. The rock strength shows a good correlation with the total number of generated micro-cracks. Two mechanisms are identified to initiate the nearly vertical macroscopic fractures which are generated in tension. At last, the influence of spatial distribution of mineral grains on the simulated strength property and micro-cracking behavior is discussed.

ACS Style

Louis Ngai Yuen Wong; Jun Peng; Cee Ing Teh. Numerical investigation of mineralogical composition effect on strength and micro-cracking behavior of crystalline rocks. Journal of Natural Gas Science and Engineering 2018, 53, 191 -203.

AMA Style

Louis Ngai Yuen Wong, Jun Peng, Cee Ing Teh. Numerical investigation of mineralogical composition effect on strength and micro-cracking behavior of crystalline rocks. Journal of Natural Gas Science and Engineering. 2018; 53 ():191-203.

Chicago/Turabian Style

Louis Ngai Yuen Wong; Jun Peng; Cee Ing Teh. 2018. "Numerical investigation of mineralogical composition effect on strength and micro-cracking behavior of crystalline rocks." Journal of Natural Gas Science and Engineering 53, no. : 191-203.

Journal article
Published: 01 May 2017 in International Journal of Geomechanics
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A beam-element-based rock bolt model is proposed in this paper. The proposed model can not only simulate the compression and tension deformations of bolts in the rock block but also capture the interaction between the bolt and the joint. The antitension, antishear, and antirotation of bolts near the joint and the hardening characteristics of bolts after the plastic yielding can be comprehensively reflected using the proposed model. The rock bolt model has been incorporated into the original numerical manifold method (NMM) procedure developed for realistic applications. In the improved NMM procedure, the bolt can be input as the physical mesh, the layout of which is not correlated with the mathematical cover. Hence, the preprocess is simplified, and numerical simulation of a large number of bolts can be easily carried out. The results of this improved procedure for bolt modeling were verified with a direct shear test of an anchored joint. Finally, the procedure was applied to evaluate the reinforcement effect of bolts in the underground powerhouse of the Shuibuya hydropower station. The results show that the deformation behavior of the anchored rock mass and the reinforcement effect of bolts can be well captured by the bolt model.

ACS Style

Wei Wei; Qinghui Jiang; Jun Peng. New Rock Bolt Model and Numerical Implementation in Numerical Manifold Method. International Journal of Geomechanics 2017, 17, 1 .

AMA Style

Wei Wei, Qinghui Jiang, Jun Peng. New Rock Bolt Model and Numerical Implementation in Numerical Manifold Method. International Journal of Geomechanics. 2017; 17 (5):1.

Chicago/Turabian Style

Wei Wei; Qinghui Jiang; Jun Peng. 2017. "New Rock Bolt Model and Numerical Implementation in Numerical Manifold Method." International Journal of Geomechanics 17, no. 5: 1.