The Stability of Upper Bound Analysis of Soft Rock Tunnel Faces Under Different Underground Water Levels

被引：0
|
作者：
Dao-bing Zhang
Jin Jiang
Jia-hua Zhang
机构：
[1] Hunan University of Science and Technology,Work Safety Key Lab On Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines
[2] Hunan University of Science and Technology,School of Resource and Environment and Safety Engineering
来源：
Geotechnical and Geological Engineering | 2021年 / 39卷
关键词：
Underground water levels; The Hoek–Brown failure criterion; The kinematic approach; Supporting force; Tunnel faces;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effect of underground water levels on the stability of soft rock tunnel faces was analyzed in this paper. The underground water levels was divided into three cases, and the Hoek–Brown failure criterion was introduced into the kinematic approach by "tangent method", then three kinds of stability analysis model of tunnel faces under different underground water levels was constructed. Based on the principle of virtual power, the expressions of supporting force on the tunnel faces of soft rock under different underground water levels were derived. Moreover, the optimal upper limit solution of the supporting force on tunnel faces was obtained by using the sequential quadratic programming algorithm with Matlab software. After that, the effect of underground water levels on the supporting force of tunnel faces was analyzed, and the damage range of tunnel faces under different underground water levels was given. This paper provides some reference value for setting parameters of shield tunneling in water-rich section.
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页码：4393 / 4404
页数：11
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