Numerical analysis to better understand the mechanism of the effects of ground supports and reinforcements on the stability of tunnels using the distinct element method

被引：85

作者：

Funatsu, T. ^{[1
]}

Hoshino, T. ^{[1
]}

Sawae, H.

Shimizu, N. ^{[1
]}

机构：

[1] Yamaguchi Univ, Dept Civil & Environm Engn, Yamaguchi 7558611, Japan

来源：

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2008年 / 23卷 / 05期

关键词：

DEM; support; reinforcement; shallow tunnel; sandy ground;

D O I：

10.1016/j.tust.2007.10.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In order to understand the mechanism of the effects of ground supports and reinforcements on tunnel stability, numerical simulations are conducted using the distinct element method. Four cases of simulations are carried out in this paper for tunnels excavated in a sandy ground to investigate the effects of (1) dowels and a lining on a single tunnel, (2) dowels and a lining on two parallel tunnels, (3) forepoling and face bolts on a single tunnel face, and (4) forepoling and face bolts on two tunnels which face each other. It is found that the use of ground supports causes a discontinuous ground to behave as a continuous one. In addition, it is revealed that supports help to form ground arches in the sandy ground. Detailed discussions are given considering the stress paths and the stress distributions. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：561 / 573

页数：13

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