通过对双碑隧道隧址区地表水源进行监测,再结合地层岩性、地质构造、大气降雨以及隧道埋深和长度分析了施工期间涌水规律和影响因素。隧道内涌水与地表水源无关,随隧道开挖长度增加并受季节影响,并且在岩溶地层涌水量会急剧增大。 Through the monitoring of the surface water source in the tunnel area of ​​ShuangBei tunnel and the combination of formation lithology, geological structure, atmospheric rainfall and the depth and length of the tunnel, the gushing water rules and influencing factors during the construction period are analyzed. The gushing water inside the tunnel has nothing to do with the surface water source. It increases with the excavation length of the tunnel and is affected by the seasons, and the water influx in the karst formation will increase drastically.