Study on the variation of the permeability coefficient of soil–rock mixtures in fault zones under different stress states
Wenhui Tan, Shuang Liang, Xuewen Ma, Pengfei Wang
发布时间：2024-05-14
关键词：permeability coefficient, rock block percentage, sensitivity analysis, soil–rock mixture, stress state
摘要：AbstractAs the first gold mine discovered at the sea in China and the only coastal gold mine currently mined there, Sanshandao Gold Mine faces unique challenges. The mine's safety is under continual threat from its faulted structure coupled with the overlying water. As the mining proceeds deeper, the risk of water inrush increases. The mine's maximum water yield reaches 15 000 m3/day, which is...
阅读全文 PDF 引用Experimental study on the damage characteristics of cyclic disturbance and acoustic emission characteristics of different types of sandstones under high stress in deep mines
Yujing Jiang, Bin Liang, Dong Wang, Ling Dong, Hengjie Luan, Changsheng Wang, Jiankang Liu
发布时间：2024-05-10
关键词：acoustic emission, cyclic perturbation, high stress, sandstone, sine wave
摘要：AbstractThree sandstone specimens common in rock engineering were selected to study the differences in the mechanical properties of rocks with different lithologies. The development and expansion of the internal cracks in the specimens were observed by combining the simulation system with the acoustic emission system. Through the combination of dynamic and static stresses, the deformation and d...
阅读全文 PDF 引用Fracturing behaviors of flawed granite induced by dynamic loadings: A study based on DIP and PFC
Xiao Wang, Wenbin Sun, Changdi He, Wei Yuan, Vahab Sarfarazi, Haozheng Wang
发布时间：2024-05-07
关键词：Fracturing behaviors of flawed granite induced by dynamic loadings A study based on DIP and PFC
摘要：AbstractThis study explored the dynamic behaviors and fracturing mechanisms of flawed granite under split-Hopkinson pressure bar testing, focusing on factors like grain size and flaw dimensions. By means of digital image processing and the discrete element method, Particle Flow Code 2D (PFC2D) models were constructed based on real granite samples, effectively overcoming the limitations of prior...
阅读全文 PDF 引用A comprehensive review of experimental studies on shear behavior of bolted rock joints with varying rock joint and bolt parameters and normal stress
Chang Zhou, Zhenwei Lang, Shun Huang, Qinghong Dong, Yanzhi Wang, Wenbo Zheng
发布时间：2024-05-06
关键词：bending angle, rock bolt, rock fracture, roughness, shear resistance
摘要：AbstractThe shear characteristics of bolted rock joints are crucial for the stability of tunneling and mining, particularly in deep underground engineering, where rock bolt materials are exposed to high stress, water pressure, and engineering disturbance. However, due to the complex interaction between bolted rock joints and various geological contexts, many challenges and unsolved problems ari...
阅读全文 PDF 引用A case study on the stability of a big underground powerhouse cavern cut by an interlayer shear zone in the China Baihetan hydropower plant
Lifang Zou, Guotao Meng, Jiayao Wu, Wei Fu, Weijiang Chu, Weiya Xu
发布时间：2024-04-30
关键词：A case study on the stability of a big underground powerhouse cavern cut by an interlayer shear zone in China Baihetan hydropower plant
摘要：AbstractThe big underground powerhouse cavern of the China Baihetan hydropower plant is 438 m long, 34 m wide, and 88.7 m high. It is cut by a weak interlayer shear zone and its high sidewall poses a huge stability problem. This paper reports our successful solution of this problem through numerical simulations and a replacement-tunnel scheme in the detailed design stage and close site monit...
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