The main formation that causes water percolation into the cave is the unloadingjoint and the trivial cracks by weathering.
造成洞窟渗漏水的主要构造是卸荷节理和风化微裂缝。
2
The abutment slope at Dagangshan Hydropower Project has complex geological conditions with faults, dikes, unloading crack intensive belt, deep unloading belt and developed joint fissures.