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Shanshan Hou, Yugui Yang, Yong Chen, Dawei Lei and Chengzheng Cai
The existence of fracture flow has an undesirable effect on the creation of the frozen wall. Brine and liquid nitrogen combined freezing technology can ensure the safety of freezing engineering, reduce the construction period and save cost. Considering t...
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Zeqi Zhu, Lan Cui, Youkou Dong, Qian Sheng, Kaiwei Tian and Zhenshan Guo
In order to study the deformation and stability of a fractured rock mass, existing research suggests that fracture deformation, which is usually obtained by evaluating the equivalent deformation modulus, dominates the deformation of a fractured rock mass...
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Na Wu, Zhengzhao Liang, Yan Tao, Ting Ai and Guijie Li
The existence of fractures has a significant influence on the mechanical properties of a rock mass. The sensitivity of the rock mass?s mechanical properties to the fracture?s geometric parameters is conducive to improving the measurement accuracy of frac...
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Jin Luo, Yumeng Qi, Qiang Zhao, Long Tan, Wei Xiang and Joachim Rohn
Hydraulic and heat transfer properties of artificially fractured rocks are the key issues for efficient exploitation of geothermal energy in fractured reservoirs and it has been studied by many previous researchers. However, the fluid temperature evoluti...
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Ying Liu, Qing Wang, Jianping Chen, Shengyuan Song, Jiewei Zhan and Xudong Han
This paper presents a method to estimate a representative element volume (REV) of a fractured rock mass based on the volumetric fracture intensity P32 and statistical tests. A 150 m ×" role="presentation">××
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80 m ×" role="presentatio...
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Jaekook Lee, Hafeezur Rehman, Abdul Muntaqim Naji, Jung-Joo Kim and Han-Kyu Yoo
Empirical systems for the classification of rock mass are used primarily for preliminary support design in tunneling. When applying the existing acceptable international systems for tunnel preliminary supports in high-stress environments, the tunneling q...
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Tingting Wang, Pingfeng Li, Chun?an Tang, Bingbing Zhang, Jiang Yu and Tao Geng
Frozen fractured rock mass is often encountered during the implementation of geotechnical engineering in cold regions. The tensile strength parameters of frozen rock play an important role in the construction of rock slopes involving tensile failure. In ...
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Yujin Ran, Jia Peng, Xiaolin Tian, Dengyun Luo, Bin Yang, Peng Pei and Long Tang
Fractured rock mass is extensively distributed in Karst topography regions, and its geological environment is different from that of the quaternary strata. In this study, the influences on geological environment induced by the construction and operation ...
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Qinghe Zhang, Tianle Zheng, Xiaorui Wang and Zhiyuan Fang
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Wanniarachchillage Ayal Maneth Wanniarachchi, Ranjith Pathegama Gamage, Mandadige Samintha Anne Perera, Tharaka Dilanka Rathnaweera, Mingzhong Gao and Eswaran Padmanabhan
The aim of this study was to identify the influence of reservoir depth on reservoir rock mass breakdown pressure and the influence of reservoir depth and injecting fluid pressure on the flow ability of reservoirs before and after the hydraulic fracturing...
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Dong Tang, Huixiang Jian, Min Song and Zhongming Jiang
During the operation of underground water-sealed oil storage caverns, a large amount of oil vapor is generated due to volatilization. Oil vapor can easily leak into the surrounding rock, and fractures in the surrounding rock are usually the dominant chan...
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Yulong Chen and Yingchun Li
Roof collapse and wall spalling in mines commonly occurred. Grouting in the rock mass of a collapsed zone is one of the most effective technologies for solving this problem. Through grouting, the rock mass of a collapsed zone can be cemented into continu...
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Guang Li, Fengshan Ma, Jie Guo and Haijun Zhao
Deformation failure and support methods of roadways have always been critical issues in mining production and safety, especially for roadways buried in complex engineering geological conditions. To resolve these support issues of kilometer-depth roadways...
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Xufeng Wang, Dongdong Qin, Dongsheng Zhang, Weiming Guan, Mengtang Xu, Xuanlin Wang and Chengguo Zhang
The efficient and safe extraction of ultra-thick coal seam in the Xinjiang East Junggar Basin has been a major focus in the future of mining in China. This paper systematically studied the overburden strata fracturing process and the structure evolution ...
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Xufeng Wang, Dongdong Qin, Dongsheng Zhang, Weiming Guan, Mengtang Xu, Xuanlin Wang and Chengguo Zhang
The efficient and safe extraction of ultra-thick coal seam in the Xinjiang East Junggar Basin has been a major focus in the future of mining in China. This paper systematically studied the overburden strata fracturing process and the structure evolution ...
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Fangtian Wang, Cun Zhang and Ningning Liang
A thin coal seam mined as a protective coal seam above a gas outburst coal seam plays a central role in decreasing the degree of stress placed on a protected seam, thus increasing gas permeability levels and desorption capacities to dramatically eliminat...
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Ahmed Elgamal and Nissreen Elfaris
The tunnel boring method (TBM) is a widely used and effective tunneling technology in various rock mass quality circumstances. A ?faulted rock mass? can range from a highly fractured rock mass to a sheared weak rock mass, making the ground conditions cha...
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Xin Zheng, Feng Huang, Sheng Wang and Wenxuan Xu
In the fractured weak fault zone, rock mass exhibits low strength and poor self-stability. The geological conditions are complex, and when tunnels cross through fractured zones, significant deformations and collapses are prone to occur, leading to geolog...
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Yanhui Guo, Shunyin Li, Shilin Mao, Qin Song, Lei Zheng, Hang Yan, Xiaoqiang Li and Yong Niu
To study the evolution law of water and mud inrush disasters in the fractured zones of water-rich faults in deep buried tunnels, a self-developed 3D physical model test system was used to conduct experimental research about the evolution process. Additio...
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Kun Zhang, Pengbo Chang, Jianxi Ren, Zheng Liu and Ke Wang
The fractured rock mass in the western cold region is affected by freezing and thawing disasters and is prone to local damage and fracture along the fissures? ends. The fatigue damage induced by repeated frost heave and traffic loads seriously endangers ...
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