WANG Tianqiang,CUI Zhen,SHENG Qian,et al.Model Experimental Study of the Influence of Strike⁃slip Fault with Dislocation on Tunnel[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(03):597-605.
WANG Tianqiang,CUI Zhen,SHENG Qian,et al.Model Experimental Study of the Influence of Strike⁃slip Fault with Dislocation on Tunnel[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(03):597-605. DOI: 10.13409/j.cnki.jdpme.202003039.
Model Experimental Study of the Influence of Strike⁃slip Fault with Dislocation on Tunnel
Most studies in the literature have focused on the effect of normal and reverse fault on the tunnel lining structural response, and only a few had investigated the performance of tunnel linings subject to strike-slip faults. Focusing on this problem, a model test of tunnel lining performance under strike-slip fault movements was conducted based on the Central Yunnan water conveyance tunnel. The results suggest that the tunnel lining structural failures were mainly due to the combination of bending tension and direct shear, in which the shear failure plays the main role. The tensile deformation was distributed along the tunnel alignment, focusing on the tunnel crown and springlines in the range of -0.5D(D is the tunnel diameter) to 2.0D away from the strike-slip fault zone. The compressive deformation mainly distributed on the tunnel springlines in the range of -0.5D and 0.5D, and kept in line with the movement direction. The influence of circumferential strain was mainly concentrated near the fault zone. Moreover, the tunnel lining deformation in the stationary block was apparently greater than that in the moving wall under strike-slip fault movements. Therefore, more attention should be paid to the structural response of tunnel linings buried in the stationary block.
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