摘要
对走马岭隧道典型隧段进行了三维有限元数值模拟研究,结果表明:该隧段围岩松动圈厚度小,拱顶及拱腰位移,应力在初期支护一定时间后均趋向稳定,支护结构能够满足围岩稳定性要求。通过断面特征点的比较分析证实,模型所揭示的应力场、位移场与现场实测结果较为吻合。同时,依据特征曲线法原理对支护结构做了优化设计。
This paper studies the typical tunnel sections of the Zouma Mountain Tunnel by the 3D finite element numerical simulation. The result indicates that the thickness of the loose ring is not macro, the displacement and stress of the vault and hance go stabilization and the retaining structure can satisfy the stabilization of the surrounding rocks. The comparison of the typical spots of the section finds that the numerical results of the in situ stress field and displacement field are consistent with local instance. The numerical simulation method is available in the prediction and estimation of surrounding rocks. Simultaneously, the retaining structure is optimized according to the characteristic curve method.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第6期561-565,共5页
Journal of Chengdu University of Technology: Science & Technology Edition
关键词
走马岭隧道
围岩稳定
数值分析
支护优化
Zouma Mountain tunnel
stabilization
numerical analysis
retaining structure optimization
