›› 2018, Vol. 39 ›› Issue (11): 4001-4009.doi: 10.16285/j.rsm.2017.0381

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on boundary effect of groundwater seepage in tunnel surrounding rock

LIU Shi-wei1, 2, SHENG Qian1, 3, ZHU Ze-qi1, 2, GONG Yan-feng2, CUI Zhen1, LI Jian-he1, ZHANG Shan-kai1   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 2. Hubei Provincial Engineering Laboratory for Underwater Tunnel, China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan, Hubei 430063, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-03-07 Online:2018-11-10 Published:2018-11-15
  • Supported by:
    This work was supported by the National Basic Research Program of China(973 Program) (2015CB057905), the National Key R&D Program of China (2016YFC0401803) and the National Natural Science Foundation of China(51409263, 51779253, 41672319).

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Abstract: Tunnel surrounding rock seepage boundary conditions can be roughly divided into four types based on water level, drainage design and construction approach, and the seepage boundary conditions to adapt to different construction conditions are discussed in detail. An analytical formula to calculate pore water pressure in tunnel surrounding rock and tunnel water inflow under four kinds of boundary conditions is obtained by adopting the method of conformal mapping of complex function. Comparison between analytical solution and numerical solution confirms the correctness of the analytical solution. Based on the relationship between tunnel water inflow with buried depth diameter ratio ( ), as well as the relationship between surrounding rock pore water pressure and under different boundary conditions, the influence of boundary conditions on shallow-buried tunnels and deep-buried tunnels is analyzed. Selection of boundary conditions for shallow-buried tunnel seepage calculation is also discussed. The conclusions for tunnel seepage calculation and drainage design reported in this article provide theoretical guidance for engineering practice.

Key words: tunnel surrounding rock, groundwater seepage, boundary conditions, pore water pressure, water inflow

CLC Number: 

  • U 451+.2
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