黏土心墙和土工膜在水库增容工程防渗设计中的对比研究

Comparative Study of Clay Core Wall and Geomembrane in Seepage Control Design of Reservoir Capacity Expansion Project

防渗设计一直是水库除险加固、增容工程的重要关注点之一。以某增容工程为例,对比分析黏土心墙和土工膜两种材料在工程中的稳定渗流特性,并进行经济性评价。分析结果表明,土工膜结合砼防渗效果与黏土心墙防渗稳定性效果均能满足设计规范。但从经济性比较认为,土工膜可较黏土心墙节省近600万元,同时缩短了施工工期,因而建议采用土工膜作为本工程的增容防渗设计材料。

The anti-seepage design has been one of the important focus of reservoir reinforcement,expansion project,a project based on the capacity as an example,comparative analysis of the steady seepage characteristics of clay core wall and geomembrane two materials in engineering,and has carried on the economic evaluation. The analysis results show that the geomembrane anti-seepage effect and can combine concrete impervious clay stability meets the design specification,but from the economic comparison that geomembrane is clay core wall to save nearly 6 million yuan at the same time,shorten the construction period,and recommend the use of geomembrane as impervious material of the project design capacity.