Stability analysis of shallow bias tunnels based on nonlinear failure criterion

被引：0

作者：

Zhang, Jia-Hua ^{[1
]}

Yang, Xiao-Li ^{[1
]}

Zhang, Biao ^{[1
]}

Xu, Jing-Shu ^{[1
]}

Yang, Zi-Han ^{[1
]}

机构：

[1] School of Civil Engineering, Central South University, Changsha , 410075, Hunan

来源：

Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | 2014年 / 42卷 / 08期

关键词：

Failure modes; Ground slope angle; Nonlinear failure criterion; Shallow bias tunnel; Stability coefficient; Supporting force; Upper bound theorem;

D O I：

10.3969/j.issn.1000-565X.2014.08.016

中图分类号：

学科分类号：

摘要：

In this paper, the stability coefficient and the supporting force of shallow bias tunnels are calculated based on the principle of virtual power from the viewpoint of energy, and the calculated results are compared. The results show that, based on the linear failure criterion, the calculated results of the stability coefficient are consistent with the existing results with a maximum error of less than 10%, which demonstrates the validity of the calculation method; and based on the nonlinear failure criterion, the supporting force is greatly influenced by some negative factors such as the nonlinear failure criterion of soil materials, the burial depth and the ground slope angle of tunnels, the ground load and the pore water. Besides, the failure surface positions corresponding to different parameter values are put forward, which provides a theoretical basis for the supporting design of shallow bias tunnels. ©, 2014, South China University of Technology. All right reserved.

引用

页码：97 / 103and121

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