鄂西南岩溶地区几个水库渗漏的教训与反思

Lessons and Reflection of Reservoir Leakage in Karst Area of Southwest Hubei

总结湖北几座位于岩溶区的水库渗漏的经验教训,提出要十分重视前期勘察和分析工作,不要放过疑点。对于强岩溶化地层,不能单纯采用钻孔压水试验成果(透水率)来评价岩体的渗透性。要设计切实可行的防渗处理措施,并且把握处理的时机,尽可能在蓄水前完成。原则上在水库蓄水前应封堵库内可能引起渗漏的溶洞、平洞、导流洞、导涵等,隔断库水与岩溶管道的水力联系。

This paper concludes the experience and lessons of reservoir leakage in karst area of Hubei-southwest and presents that it＇s necessary to pay attention to previous exploration and analysis.To the strong-kast area,it is improper to use water pressure test in borehole（permeability rate） only to estimate penetrability of rock mass.It is necessary to design practical seepage control method and complete the method before water storage as much as possible.In principle,karst cave,adit and diversion tunnel which could cause reservoir leakage should be sealed off before water storage,in order to cut the hydraulic connection between reservoir water and karst conduit.