岩溶地区涌水对地铁隧道轨道结构的影响及防治

Impact and Prevention of Environmental Water Gushing on Metro Tunnel Track Structure in Karst Areas

分析了贵阳某地铁隧道轨道异常隆起处的监测数据;通过数值仿真手段模拟变形值,从而计算出轨道结构所受浮力的分布及大小。通过结构应力计算得出了轨道结构本身的风险点及薄弱点,同时通过仿真计算,得出道床板下水压限值。对岩溶地区地铁隧道易发生渗漏水问题的区域给出了防治建议。

Monitoring data of abnormal uplift of certain metro tunnel track in Guiyang is analyzed.Through numerical simulation of deformation value,the buoyancy distribution and magnitude of the track structure is calculated.The risky and weak points of track structure itself is calculated through structural stress calculation.Through simulation calculation,the under-slab water pressure limit is obtained.Prevention and control suggestions are given for metro tunnel areas prone to water leakage in karst areas.