Mechanical Behaviour of Shallow Tunnel in Unsymmetrical Strata

被引：0
|
作者：
Yang Shang Yang [1 ]
机构：
[1] Shandong Jiaotong Univ, Dept Phys & Math, Jinan 250023, Peoples R China
来源：
ADVANCES IN INDUSTRIAL AND CIVIL ENGINEERING, PTS 1-4 | 2012年 / 594-597卷
关键词：
tunnel; mechanical behaviour; numerical simulation; deformation; stability;
D O I：
10.4028/www.scientific.net/AMR.594-597.1210
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Triaxial compression tests have been performed to determine the properties of the surrounding rock. The displacement and stress of surrounding rock have been analyzed according to Silin 2 at Yungui railway under three kinds of conditions: the initial state, excavation without supporting, and supporting after excavation.Plane strain FEM is established to analyze the stability of the surrounding rock. Contrasted the monitor measuring data,the results show that: the most unfavorable position in the tunnel is found at the ridge side of the arch; and the implementation of support to ensure the stability of surrounding rock, and the design of the early support approach to meet the safety requirements. The results have a certain significance for understanding the mechanical behavior of shallow tunnel in unsymmetrical strata.
引用
收藏
页码：1210 / 1213
页数：4
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