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A platform for research: civil engineering, architecture and urbanism
Surrounding Rock Stability and Support Structure Safety Analysis of Large Diversion Tunnel in Undesirable Geological Section Based on Hydro-Mechanical Coupling Method
In this paper, the drainage hole sub-model is introduced to establish the hydro-mechanical coupling analysis method, which is successfully applied to the analysis of seepage field characteristics, surrounding rock stability and support structure safety during the plugging period of the diversion tunnel section with unfavorable geology in a water conservancy project. The results show that the influence of fault zone on the seepage field of rock mass is obvious, specifically, the velocity near the fault zone is large, and concentrated seepage will occur. The drainage hole of the diversion tunnel can effectively reduce the pore water pressure acting on the lining and the surrounding rock near the excavation face. The unloading damage degree of surrounding rock at the fault zone of the diversion tunnel is obvious, and the stress of the anchor bolt is large. The surrounding rock deformation and support stress in the above areas should be monitored.
Surrounding Rock Stability and Support Structure Safety Analysis of Large Diversion Tunnel in Undesirable Geological Section Based on Hydro-Mechanical Coupling Method
In this paper, the drainage hole sub-model is introduced to establish the hydro-mechanical coupling analysis method, which is successfully applied to the analysis of seepage field characteristics, surrounding rock stability and support structure safety during the plugging period of the diversion tunnel section with unfavorable geology in a water conservancy project. The results show that the influence of fault zone on the seepage field of rock mass is obvious, specifically, the velocity near the fault zone is large, and concentrated seepage will occur. The drainage hole of the diversion tunnel can effectively reduce the pore water pressure acting on the lining and the surrounding rock near the excavation face. The unloading damage degree of surrounding rock at the fault zone of the diversion tunnel is obvious, and the stress of the anchor bolt is large. The surrounding rock deformation and support stress in the above areas should be monitored.
Surrounding Rock Stability and Support Structure Safety Analysis of Large Diversion Tunnel in Undesirable Geological Section Based on Hydro-Mechanical Coupling Method
Liu, Dengxue (author) / Zhang, Mingzhu (author) / Liu, Qing (author) / Zhang, Yuting (author) / Huang, Shuling (author) / Wu, Yongjin (author)
2022-11-25
816273 byte
Conference paper
Electronic Resource
English
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