横穿滑坡变形区隧道受力变形规律及影响因素分析

doi:10.13722/j.cnki.jrme.2015.0628

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Abstract The stress of the tunnel across landslide deformation zone is very unfavorable. In order to study the stress and deformation laws of the tunnel under sliding force，firstly，the model of elastic rock-the tunnel structure is built on the basis of the interaction between tunnel and soil landslide. The matrix transfer method is adopted to establish the calculation formulas of internal force and displacement of the tunnel. Secondly，the distribution characteristics of the tunnel internal force and displacement and the influence of some important parameters are analyzed by MATLAB programming. Finally，the physical model test is carried out to verify the theoretical results. The studies indicate that，when the across segment of tunnel is long，the internal force is almost zero in a certain range of middle tunnel，and the degree of tunnel bending deformation is small，mainly presented global displacement，which is mainly controlled by the vertical foundation coefficient，the value and distribution of sliding force. The stable rock mass outside the landslide has an anchor effect on the tunnel. The force and deformation state of tunnel is the worst near the boundary of the tunnel and sliding surface，where the tunnel is most prone to failure. The results of physical model test are in good agreement with the theoretical calculation results，which verify the correctness of the theoretical calculation method and results.

Key words： tunnel engineering landslide tunnel elastic foundation beam transfer matrix method internal force displacement physical model test

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	Articles by authors
	YIN Jing1
	2
	DENG Ronggui1
	ZHONG Zhibin1
	LI Kaitian1
	SUN Chunping2

Cite this article:

YIN Jing1,2,DENG Ronggui1, et al. Stress and deformation laws and influence factors analysis of tunnel across the slope deformation zone[J]. , 2016, 35(S2): 3615-3625.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.0628 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS2/3615

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