›› 2018, Vol. 39 ›› Issue (10): 3555-3564.doi: 10.16285/j.rsm.2017.0900

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Influence analyses on force and deformation of existing tunnels induced by landslide in mountain region

ZHANG Zhi-guo1, 2, MA Bing-bing1, HUANG Mao-song3, XU Xiao-yang1   

  1. 1. School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China; 2. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; 3. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
  • Received:2017-05-09 Online:2018-10-11 Published:2018-11-04
  • Supported by:
    This work was supported by the Key Program for National Natural Science Foundation of China (51738010), and the General Program for National Natural Science Foundation of China (41772331) and the Project Program of State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology (SKLGDUEK1707).

Abstract: In mountain region, landslide has a significant influence on the force and deformation of existing tunnels. The existing researches generally separate the landslide and the tunnel to investigate. However, very little attention is paid to the combination of the two kinds of engineering problems. Moreover, most studies remain on the monitoring analysis of practical engineering. It is rare to analyze the landslide-tunnel interaction by theoretical analysis. In this study, firstly, the landslide thrust is deduced based on the transferring coefficient method and the limit equilibrium method. Secondly, imposing the landslide thrust on the existing tunnel, and establishing elastic foundation beam model for the landslide-tunnel interaction, the internal force and displacement of arbitrary tunnel section are solved by the transfer matrix method. In addition, three-dimensional numerical model is established to simulate the landslide-induced tunnel deformation. The numerical results are compared with the theoretical method, and good consistency is obtained. Finally, the influences of the landslide thrust, the foundation coefficients in the sliding and the sliding bed, tunnel lining stiffness and tunnel length are analyzed. The results can provide certain theoretical support for reinforcement and maintenance of existing tunnels in landslide area.

Key words: tunnel-landslide interaction, elastic foundation beam, transfer matrix method, theoretical analysis, numerical simulation

CLC Number: 

  • P 694
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