武昌地区矿山法隧道变形远程监控与渗水分析

Remote Monitoring of Mining Method Tunnel Deformation and Water Seepage Analysis in Wuchang District

武汉地铁2号线广埠屯站～虎泉站区间隧道采用矿山法施工。隧道从小里程到大里程依次穿过泥岩、砂岩、灰岩、煤质页岩。其中灰岩(岩溶发育)段和煤质页岩段地下水丰富,部分隧道段顶板埋深较浅,受渗水影响极易变形。运用远程预警系统监控隧道变形,经统计分析确定远程监控系统控制值,监测数据分级控制,对岩溶区及时了解超前钻孔信息,结合物探等进行超前预控,有效控制隧道内和地表的变形。

Mining method is used in the tunnel construction between Guangbutun station and Hu- quan station of wuhan metro line 2. The tunnel, from small range to large range , goes through mudstone, sandstone, limestone, coal shale in turn. With rich groundwater in limestone and coal shale section, shallow depth of the roof in part of the tunnel section, easy deformation of the roof affected by water penetration. By using early warning system for remote monitoring of tunnel de- formation, ＂determining control values by way of statistical analysis of remote monitoring system, monitoring data of grade control, timely advance borehole information in karst area, combined with geophysical exploration for preview in advance, deformation of the tunnel and surface can be effectively controled.