Research on boundary effect of groundwater seepage in tunnel surrounding rock

被引：0
|
作者：
Liu Shi-wei [1 ,2 ]
Sheng Qian [1 ,3 ]
Zhu Ze-qi [1 ,2 ]
Gong Yan-feng [2 ]
Cui Zhen [1 ]
Li Jian-he [1 ]
Zhang Shan-kai [1 ]
机构：
[1] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
[2] China Railway Siyuan Survey & Design Grp Co Ltd, Hubei Prov Engn Lab Underwater Tunnel, Wuhan 430063, Hubei, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
ROCK AND SOIL MECHANICS | 2018年 / 39卷 / 11期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
tunnel surrounding rock; groundwater seepage; boundary conditions; pore water pressure; water inflow;
D O I：
10.16285/j.rsm.2017.0381
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
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 (h/D), as well as the relationship between surrounding rock pore water pressure and h/D 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.
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页码：4001 / 4009
页数：9
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