复合土工膜在下岙水库防渗处理中的应用

Application of Complex Geomembrane in Impervious Treatment in Xia'ao Reservoir

下岙水库由于水库防渗体土质和施工质量,坝体不均匀沉降等原因,坝体出现了纵向裂缝,经鉴定为病险水库,需防渗加固处理.在采用复合土工膜对大坝进行防渗加固过程中,严格按复合土工膜施工工艺、技术要求,各项性能指标均能达到设计要求.经过半年的蓄水运用,干砌石护面平整,没有出现护面下滑、堆石,坝后无水溢出点,坝体无渗漏现象,证明土工膜防渗效果良好.达到防渗除险加固设计目的.

Xia＇ao was checked to be a ill-conditionecl reservoir with longitudinal cracks due to the soil quality and constructing quality of the impervious layer and the differential settlement of the dam. Impervious reinforcement is fulfilled by using complex geomembrane and following serious constructing techniques with qualified indicators. No Cover downdrifting, no roekfilling, no overflowing and no seepage is founded.