水库岩溶防渗堵漏技术研究与实践

Research and practice of seepage plugging technology of karst reservoir

如何解决水库岩溶渗漏问题,广西结合工程实例进行了深入的研究,根据水库岩溶渗漏特征,分析渗漏原因,采取不同的措施,创造性地运用了"反堵减压、掺料冲填、浓浆成幕、高压补强"和"引滤反堵灌浆法、浓浆粗料低压限流灌注高压复灌法、反捕捉洞穴海黄鳝鱼灌浆法、堵头加强通道追源灌浆法"等新工艺、新技术,在水库正常蓄水条件下灌浆,取得较好的防渗堵漏效果。

The karst seepage of reservoirs is the problem of common concern in karst areas.Due to seepage,reservoir storage capacity is far below the design capacity and lead to the collapse of the dam have a direct threat to the dam and downstream residents＇ safety.According to the characteristics of karst seepage of reservoir,analysis the reasons of leakage,to take different measures,creative use of the ＂anti-blocking decompression,admixture filling,thick slurry into a screen,high-pressure reinforcement＂ and ＂anti-blocking filter lead grouting method,thick slurry of coarse material low perfusion pressure limiting reperfusion,anti-catch yellow sea eel caves grouting method,grouting plug strengthen channel traced Act ＂and other new techniques,new technologies,under the conditions of normal water in the reservoir filling,made better impermeable plugging effect.