龙山水库渗漏问题及其解决方案

Leakage problem of Lonshan reservoir and solution

广东省龙山水库大坝为厚斜墙堆石坝,坝址位于NNE向两条压扭性大断层之间,构造断裂、节理裂隙发育,全风化、强风化层深厚。针对水库的几个重要渗漏点,对其不同的渗漏原因进行了分析,从而确定了帷幕灌浆、高压喷射注浆、复合土工膜等不同的解决方案。

The main dam of Lonshan reservoir in Guangdong province is a rockfill dam with thick inclined wall. The dam site falls between two compression-shear NNE major faults, where the structure is broken, joint fissure developed, completely--strongly weathering layer deep and thick, rendering good condition for reservoir water leakage. In view of the several major leakage positions of reservoir, based on analysis of leakage causes, different solutions were schemed including curtain grouting, high-pressure rotary jetting and composite geomembrane etc.