Combined with the exploration and the test measurement,the formation reason of the solution cave of the un-typical soluble rock on Daao hydraulic project is analyzed.

• 采用勘探和测试手段,分析了大坳水利枢纽工程非典型可溶性岩溶洞的成因及其对工程的安全影响,并结合工程特性,提出了工程处理措施。