Numerical study on failure mechanism of tunnel in jointed rock mass

被引：164
|
作者：
Jia, P. [2 ]
Tang, C. A. [1 ]
机构：
[1] Dalian Univ Technol, Ctr Rock Instabil & Seismic Res, Dalian 116024, Peoples R China
[2] NE Univ, Sch Resources & Civil Engn, Shenyang 110004, Peoples R China
来源：
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2008年 / 23卷 / 05期
关键词：
joints; rock mass; numerical simulation; failure; tunnel;
D O I：
10.1016/j.tust.2007.09.001
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
During underground excavation many surrounding rock failures have close relationship with joints. The stability study on tunnel in jointed rock mass is of importance to rock engineering, especially tunneling and underground space development. In this paper, a numerical code called RFPA was used to study the influence of different dip angle of layered joints and the lateral pressure coefficient on the stability of tunnel in jointed rock mass. Numerical analysis indicated that both the dip angle of joints and the lateral pressure coefficient have significant impacts on the failure mode and displacement characters of tunnel. The progressive failure processes of tunnel in jointed rock mass were presented and the mechanisms were discussed. The applicable condition of geographical method by Goodman is also discussed. These results offer a guideline in support design. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：500 / 507
页数：8
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