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Full-Text Articles in Engineering
Experimental Research On Fracture Initiation Pressure Of Conventional Triaxial Slurry Fracturing In Similar Material Of Sandy Mudstone, Hua Cheng, Xiang-Yang Liu, Ru-Kang Cao, Xue-Song Wang
Experimental Research On Fracture Initiation Pressure Of Conventional Triaxial Slurry Fracturing In Similar Material Of Sandy Mudstone, Hua Cheng, Xiang-Yang Liu, Ru-Kang Cao, Xue-Song Wang
Rock and Soil Mechanics
To further explore the fracture initiation mechanism of fracture grouting in typical sandy mudstone from Huainan and Huaibei mining areas in China, a conventional triaxial fracture grouting test device was developed, and the model test of fracture initiation pressure of slurry fracturing in similar material of sandy mudstone was carried out. Based on the test results, the influences of rock strength and stress state on grouting fracture initiation pressure and fracture propagation pattern were analyzed, and the fracture initiation mechanism of fracture grouting in sandy mudstone was revealed. The results show that there is a positive correlation between the initiation …
Mechanical Response Characteristics Of Lining Structure Of Pipeline Karst Tunnels In Water-Rich Areas, Hao-Bo Fan, Ding-Kun Zhou, Yong Liu, Yu-Xiang Song, Zheng-Guo Zhu, Yong-Quan Zhu, Xin-Qiang Gao, Jia-Qi Guo
Mechanical Response Characteristics Of Lining Structure Of Pipeline Karst Tunnels In Water-Rich Areas, Hao-Bo Fan, Ding-Kun Zhou, Yong Liu, Yu-Xiang Song, Zheng-Guo Zhu, Yong-Quan Zhu, Xin-Qiang Gao, Jia-Qi Guo
Rock and Soil Mechanics
For the karst tunnel with pipeline cavities in the surrounding rock, it is very easy to accumulate high water pressure in the pipeline cavity due to the influences of heavy rainfall on the surface and groundwater, which will lead to lining cracking, water leakage, and water gushing diseases. To explore the influence of high water pressure on the lining structure, model tests of pipeline karst tunnels under high water pressure were carried out, and the internal force characteristics of tunnel lining under the influence of cavity position and water head height were studied. Based on the test findings, the numerical …
Model Test Of Failure Mechanism Of Tunnel With Flexible Joint Crossing Active Fault Under Strike-Slip Fault Dislocation, Guang-Xin Zhou, Qian Sheng, Zhen Cui, Tian-Qiang Wang, Ya-Li-Na Ma, Xing-Wei Fu
Model Test Of Failure Mechanism Of Tunnel With Flexible Joint Crossing Active Fault Under Strike-Slip Fault Dislocation, Guang-Xin Zhou, Qian Sheng, Zhen Cui, Tian-Qiang Wang, Ya-Li-Na Ma, Xing-Wei Fu
Rock and Soil Mechanics
Based on the fault crossing situation of Xianglushan tunnel of water diversion project, we conducted systematic monitoring and analysis of key mechanical characteristics of tunnel such as surrounding rock rupture pattern, lining damage pattern and crack development, strain distribution characteristics during faults dislocation simulation through indoor physical model tests, and thoroughly studied the damage form and failure mechanism of tunnel with flexible joint crossing active faults under strike-slip fault dislocation. In terms of the mechanism of the design parameters of the flexible joint tunnel to resist faulting, the effects of factors such as liner section length, liner thickness, tunnel diameter, …