Academic Journal of Architecture and Geotechnical Engineering, 2024, 6(1); doi: 10.25236/AJAGE.2024.060103.
Jun Gao1,2, Guotang Zhao2, Juntao Kang1, Dongsheng Xu1,3, Huiling Xue1, Yucheng Wang4
1School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, Hubei, 430070, China
2National Railway Group, Beijing, 100083, China
3Sanya Science and Education Innovation Park of Wuhan University of Technology, Sanya, Hainan, 572024, China
4Hefei Institute of Material Sciences, Chinese Academy of Sciences, Hefei, 230000, China
Due to its unique address characteristics, the carbon shale tunnel is easy to undergo large deformation, which poses a severe challenge to the structural stability and safety of the tunnel. In order to study the mechanism and control of large deformation of carbonaceous shale tunnels, a combination of theoretical analysis, numerical simulation, and on-site testing was used to design a "anchoring + grouting" composite support system based on a certain carbonaceous shale tunnel project on the Yaxi Expressway in Sichuan. The results indicated that the main reason for the large deformation of carbonaceous shale tunnels is the combined effect of surrounding rock structure, geostress, and construction factors, which leads to high ground stress and large deformation. It is recommended to use a combination support system of "anchoring + grouting" in carbonaceous shale tunnel engineering, and adjust the construction process appropriately according to the grade of surrounding rock and construction progress, which can effectively control the large deformation of carbonaceous shale tunnels.
Carbonaceous Shale, Tunnel Deformation, Deformation Control, Numerical Simulation
Jun Gao, Guotang Zhao, Juntao Kang, Dongsheng Xu, Huiling Xue, Yucheng Wang. Mechanism and Control of Large Deformation in Carbonaceous Shale Tunnels. Academic Journal of Architecture and Geotechnical Engineering (2024) Vol. 6, Issue 1: 13-20. https://doi.org/10.25236/AJAGE.2024.060103.
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