Shear Behavior and Anisotropy Characteristics of the Fracture Morphology of Sandstone with Different Water Contents by Changang Du, Lulu Sun, Botao Qin, Jiang Xu, Yixin Liu

“…Hydromechanical coupling in rock masses is an important issue for many rock mechanics and hydrogeology applications. …”
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Study on Occurrence Mechanism of Coal Pillar in L-Shaped Zone during Fully Mechanized Mining Period and Prevention Technology by Zeng-qiang Yang, Hong-mei Wang, De-quan Sun, Xian-jian Ma, Ming-bao Xu, Nai-xin Si

“…In order to study the occurrence mechanism of rock burst in L-shaped zone during a fully mechanized mining period, the No. 705 working face which is located in Baojishan Colliery is taken as a typical engineering background. …”
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Application of Homogenized Load-Bearing Ring Hypothesis in Roadway Supporting by Quntao Zhang, Jianwei Zheng, Xiaodong Sun, Wenzhou Li, Kang Yi, Yukai Fu, Jiulin Shi, Shuai Wang, Biao Liu, Qi Wang

“…Artificial support system takes advantages of self-bearing capacity of surrounding rock mass in roadway support, which is one of the important supporting ideas in modern times. …”
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Analysis of geological characteristics and potential factors of formation damage in coalbed methane reservoir in Northern Qinshui basin by Hongjian Wu, Xiangwei Kong

“…As the effective stress escalates from 2 MPa to 10 MPa, there is a marked decrease in the permeability of coal rock. With increasing effective stress, the pore structure and natural fractures within the coal rock are compressed more tightly, resulting in a diminished permeability of the coal rock. …”
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Elastoplastic Analysis of Circular Opening Based on a New Strain-Softening Constitutive Model and Its Engineering Application in Hydraulic Fracturing by T. Yang, Q. S. Ye

“…Constitutive effect is extremely important for the research of the mechanical behavior of surrounding rock in hydraulic fracturing engineering. In this paper, based on the triaxial test results, a new elastic-peak plastic-softening-fracture constitutive model (EPSFM) is proposed by considering the plastic bearing behavior of the rock mass. …”
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Investigation of the Mechanical and Permeability Evolution Effects of High-Temperature Granite Exposed to a Rapid Cooling Shock with Liquid Nitrogen by Tianzuo Wang, Linxiang Wang, Fei Xue, Mengya Xue, Hangcheng Xie, Ningbo Tang

“…Liquid nitrogen (LN2), which can greatly improve the efficiency of hot dry rock (HDR) mining, is commonly used as a cooling material in the enhanced geothermal system (EGS). …”
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Key Strata Inducing Dynamic Disasters Based on Energy Condition: Criterion and Application by Chao Xu, Gang Yang, Haoshi Sun, Liangliang Qin, Kai Wang, Bo Ren, Zhijie Wen

“…The thick and hard rock strata (THRS) exist widely in coal measure strata, which control the movements of overlying rock strata in stopes. …”
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Unloading damage evolution and rockburst risk assessment of Xuefengshan No.1 tunnel by combining multiple approaches by Guo Xiang, Xiaohua Zhang, Shengnian Wang, Zhijian Wu, Xinming Pan, Dehui Xu

“…The influences of stress distribution, displacement development, and energy release on the stability and rock burst risk of surrounding rock masses were analyzed. …”
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Research on the Identification of Precursor Information of Limestone Rockburst under Triaxial Unloading Conditions by Wenjun Ding, Zonghong Zhou, Jian Liu, Tingkai Hou, Jiaxin Wang, Jin Li, Xin Zhang

“…Based on the energy evolution of limestone and acoustic emission evolution law, this paper takes the limestone unloading energy evolution law and acoustic emission cumulative ringing count, cumulative energy, RA value, acoustic emission information entropy, and acoustic emission damage as precursor discrimination indicators for the occurrence of rock explosion. Study of the impact of the unloading rate on the rock explosion precursors indicates that with increasing unloading rate there are more dramatic changes in the degree of each precursor discrimination indicators and rock ruptures within a short period of time before the completion of the indicators. …”
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Investigating the Permeability of Marble under Moderate Pressure and Temperature by Jianping Yang, Weizhong Chen, Diansen Yang, Hongming Tian

“…Using this law, the permeability in the compressive regime for crystalline rock can be predicted from the volumetric strain curve of mechanical tests.…”
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Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement by Changheon Song, Jintai Chung, Jae-Sang Cho, Yun-Joo Nam

“…This paper aims to determine the optimal design parameters for percussive drilling systems considering the bit-rock interaction. First, the motion dynamics of a bit impacted by a dropped piston are modeled by impact stress propagation and a rock-breaking mechanism representing the penetration resistance coefficient and unloading constant. …”
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Study on Numerical Simulation of Geometric Elements of Blasting Funnel Based on PFC5.0 by Wenle Gao, Zehua Zhang, Baojie Li, Kunpeng Li

“…Based on the particle flow code (PFC2D) within the discrete element method (DEM), the rock mass model was established according to the site rock conditions and the rock mass blasting was simulated by the explosive particle expansion method. …”
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Experimental Study on Mechanical Properties of Deep Buried Granite under Different Confining Pressures by Jun Zhao, Tan Zhang

“…Brittle failure of hard rock poses a serious threat to the stability of surrounding rock in deep underground engineering. …”
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Effects of Cyclic Loading on the Mechanical Properties of Mature Bedding Shale by Yintong Guo, Chunhe Yang, Lei Wang, Feng Xu

“…Further, the elastic part of shale rock deformation was recovered in the unloading process, whereas the irreversible deformation remained. …”
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Prediction and Evaluation of Coal Mine Coal Bump Based on Improved Deep Neural Network by Shuang Gong, Yi Tan, Wen Wang

“…Finally, four indexes of maximum tangential stress of surrounding rock, uniaxial compressive strength of rock, uniaxial tensile strength of rock, and elastic energy of rock are selected to form the prediction index system of coal bump. …”
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Determination of Shape Coefficient in Elastic Modulus Estimation with Penetration Test by Tongbin Zhao, Rui Mao, Kai Fang, Biwen Zhang, Fenghai Yu

“…Elastic modulus is a significant parameter in design and construction for rock engineering. Rock penetration test as a convenient method to evaluate the modulus of rocks has a great potential to be used. …”
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Experimental Study on Mechanical Properties and Acoustic Emission Characteristics of Water Bearing Sandstone under Stable Cyclic Loading and Unloading by Xinzhan Qin, Yu Zhou, Manchao He

“…The mechanical properties of water bearing rock under cyclic loading and unloading experiments with varying upper limits are obtained using a triaxial test system, and the precursory information of rock failure is captured, providing significant guidance for stability analysis and instability warning for surrounding rock in pumped storage power stations.…”
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Research on Stress Distribution Characteristics for Uniquely Shaped Roadway with Hard Roof in Steeply Inclined Coal Seam and Support Technology of Reducing Vibration Impact by Junhui Zhang, Hui Chen, Xiuzhi Shi, Weiming Guan, Xiaolong Sun

“…The coal seam and its roof have a certain impact tendency, which is the internal condition of rock burst. The syncline tectonic stress causes the original rock stress to reach a higher level. …”
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A Simulation Study on the Swelling and Shrinking Behaviors of Nanosized Montmorillonite Based on Monte Carlo and Molecular Dynamics by Kaiwen Tong, Jianhua Guo, Shanxiong Chen, Fei Yu, Shichang Li, Zhangjun Dai

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Effects of two different cooling impact treatments on the thermal damage and mechanical properties of high-temperature granite by Xingchen Liu, Feng Huang, Aichen Zheng, Dong Yang

“…A rock brittleness evaluation method for the entire deformation process, considering the stress–strain relationship and energy storage–dissipation mechanism of rocks, is proposed. …”
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