摘要
文章以川主寺隧道所处的工程地质条件为基础,通过现场调研分析了隧道围岩变形破坏形式主要为坍塌、掉块以及剥落。围岩稳定性三维有限元数值模拟结果显示,碎裂围岩自稳能力差,围岩变形以弹塑性变形、松弛变形为主;H型钢拱架支护结构对碎裂围岩稳定性起到积极的作用,并通过典型洞段现场位移监测数据分析结果得以证实。
Based on the geological conditions of the Chuanzhusi Tunnel,which passes through an ancient landslide,a site investigation found that the surrounding rock deformation and failure modes of the tunnel are mainly tunnel collapse,spalling and dropping.The three-dimensional finite element numerical simulation of the stability of surrounding rock by FLAC3D showed that the self-stability of the fractured rock mass is poor and the deformation modes are mainly of the elastic-plastic and relaxation varieties.Support with an H-beam steel framework played a positive role regarding the stability of fractured surrounding rock.
出处
《现代隧道技术》
EI
北大核心
2012年第1期53-59,共7页
Modern Tunnelling Technology
基金
成都理工大学优秀创新团队培育计划(编号:HY0084)
关键词
公路隧道
围岩变形
围岩稳定性
有限元数值模拟
Chuanzhusi Tunnel
Deformation and failure of surrounding rock
Stability of surrounding rock
FEM numerical simulation
