华东交通大学学报Issue(5)：24-29,6.
超浅埋隧道下穿冲沟边坡塌方分析与处治
Numerical Analysis and Treatment of Collapsed Shallow Tunnel under Gully Side Slope
摘要
Abstract
During undercrossing of gully side slope for a tunnel, collapse accident occurred. According to the field geological and construction conditions, this study sets up the numerical model, taking the influence of rainstorm and hydrops into account. The commercial software FLAC3D is adopted to simulate the behaviors of the tunnel and surrounding rock. Based on the results of deformations in rock and the inner forces within rock bolts and beam, the deformation of the tunnel and the causes of tunnel collapse are analyzed. The results show that: shallow tunnel, continuous rainfall, poor mechanical properties of rock and construction support landslides result in collapse. The comprehensive remedy measures consisting of reinforcement inside, slope surface grouting reinforcement and excavation control are proposed, which have achieved satisfactory results so as to offer reference for the future similar projects.关键词
超浅埋隧道/下穿边坡/塌方冒顶/数值分析Key words
shallow-buried tunnel/undercrossing gully side slope/collapse/numerical simulation分类
交通工程引用本文复制引用
吴东鹏,杨新安..超浅埋隧道下穿冲沟边坡塌方分析与处治[J].华东交通大学学报,2014,(5):24-29,6.基金项目
神华包神铁路集团公司科研计划项目 （）
