云南水力发电2024，Vol.40Issue(4)：29-32,4.DOI:10.3969/j.issn.1006-3951.2024.04.008
深埋隧洞软岩变形控制和应力拱圈形成分析
Analysis of Soft Rock Deformation Control and Stress Arch Formation in Deep Buried Tunnels
杨正基 1杜宁 1史林泉1
作者信息
- 1. 云南省滇中引水建设管理局,云南 昆明 650032
- 折叠
摘要
Abstract
This paper discusses the formation of stress arches,the strength and confining pressure of stress arches,and the deformation control mechanism of surrounding rocks in deep buried tunnels in high stress soft rock environments.It analyzes the effects of advanced geological prediction,reduction of surrounding rock disturbance,mathematical simulation and monitoring,active pressure support,and stable transition of surrounding rock constraints on deformation control and stress arch formation,as well as successful cases of active pressure support.It clarifies that the active pressure support system that controls the release of surrounding rock stress while providing timely confining pressure and measures to ensure stable transition of surrounding rock constraints can promote the formation of stress arch,and can bear the compressive stress in high stress environments.关键词
软岩/深埋隧洞/高地应力/变形控制/应力拱圈/围岩约束过渡/让压支护Key words
soft rock/deep tunnel/high geostress/deformation control/stress arch/surrounding rock constraint transition/pressure support分类
水利科学引用本文复制引用
杨正基,杜宁,史林泉..深埋隧洞软岩变形控制和应力拱圈形成分析[J].云南水力发电,2024,40(4):29-32,4.
