富水岩溶区地铁道床异常隆起变形分析与防治

Analysis and Prevention of Abnormal Uplift Deformation of Subway Track Bed in Water-rich Karst Area

贵阳市轨道交通1号线和2号线区间隧道采用矿山法施工,沿线穿越岩溶、断层及破碎带等可溶岩;孔隙水、基岩裂隙水及岩溶水等地下水发育;在试运行阶段进行轨道状态检查时发现轨面标高出现不同程度偏差,轨道道床出现异常隆起,后召开专题会议和专家咨询会,分析轨道异常隆起原因和制定相应处置措施。

The tunnels of Guiyang Rail Transit Line 1 and Line 2 are constructed by the mining method,passing through karst,faults and broken zones and other soluble rocks along the line;groundwater such as pore water,bedrock fissure water and karst water develops;in the trial operation stage During the track condition inspection,it was found that there were various degrees of deviation in the elevation of the track surface,and the track bed appeared abnormally uplifted.Afterwards,special meetings and expert consultation meetings were held to analyze the reasons for the abnormally uplifted track and formulate corresponding measures.