地铁联络通道涌水涌砂治理技术研究

针对西安地铁联络通道施工过程中出现的涌水涌砂情况,从地层、坑底突涌稳定性验算,旋喷桩加固、降水井施工等多方面进行了分析,并制定了相应的方案,即通过初支加固、涌水点多次反压,增设降水井、组合浆液注浆、监测等方式进行处理,涌水得到了有效控制,并确保了后续未完成工程的安全。

Research on Construction Technology for Treating Water and Sand Gushing in Subway Communication Channel

In view of gushing water and sand in the construction process of a subway communication channel in Xi*an,the author has studied on the management measures of water inrush from the formation,the stability of the pit bottom,the reinforcement of the jet grouting pile,the construction of the precipitation well,etc.,and developed a corresponding plan by the ways of initial reinforcement,multiple back pressure at the water inrush point,additional precipitation wells,combined slurry grouting,monitoring and so on.The water is effectively controlled and the safety of subsequent unfinished projects is ensured.