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介绍大沫电站１＃引水洞进口端，由于塌方导致洞顶上方溶洞底被击穿，引发突水涌泥的情况及其处理方案的比选
Introduce the inlet of No.1 diversion tunnel in Damao Hydropower Station, and the bottom of the cave is punctured at the top of the tunnel as a result of landslide, which leads to the situation of water inrush and the comparison of its treatment scheme