富水岩石地层地铁区间隧道涌水治理技术

Tunnel Water Gushing Control Technology for Interval Metro in Water-rich Rock Stratum

乌鲁木齐地铁1号线北门站—新兴街站矿山法区间隧道穿越雅玛里克复式背斜轴部,受地质构造影响,围岩倾角大,岩层破碎,基岩裂隙水丰富。针对施工中出现的涌水状况,以保护地下水资源,减少地下水抽排,节约工程造价为目的,提出"以堵为主、堵排结合、限量排放、减少抽排"的治理理念。通过采取钻孔分流、表面嵌缝、浅层封堵、深层加固等施工措施,使得隧道开挖得以安全顺利进行。

The interval tunnel of Urumqi metro line 1 betw een Beimen station and Xinxing jie station constructed bymining method passes through the Yarmaric anticlinorium shaft, which has a large dip angle of surrounding rock,broken rock stratum and rich bedrock fissure w ater due to the geological structure inf luence. According to the watergushing in construction, the treatment idea of blocking water as the main means, combination of w ater plugging anddrainage, limiting and reducing drainage was put forw ard in order to protect groundw ater resources,reducegroundw ater pump drainage and save the cost of the project, and such construction measures as drilling shunt, surfacecaulking, shallow plugging and deep reinforcing would make the tunnel excavation be carried out safely andsmoothly .