On Karst Water Inrush (Gushing) Geological Environment in Pingyang Tunnel

According to Pingyang tunnel karst complex groundwater environment, This paper carried out thorough theoretical analysis and field observation from Pingyang tunnel stratum rock properties, engineering geology, hydrogeology, the surrounding patch, runoff and drainage and the changes of surface water environment, as well as tunnel excavating. The complex formation mechanism has given in the Pingyang tunnel karst water. Some effective references had put forward for the engineering treatment, provided some valuable references for other similar underground engineering construction.