在土坝防渗加固工程中，混凝土护坡和混凝土防渗墙的应用在技术上已较为成熟，但对其实际防渗效果的评价尚缺乏计算依据。以昌梨水库为例，采用有限元法计算了防渗加固前后坝体的渗流特性，结果表明，以混凝土护坡和混凝土防渗墙为主要防渗措施建立的防渗体系效果良好，可明显改善坝体和坝基的渗流性态，加固后大坝各料区渗透坡降和渗透流量均明显减小，且满足规范要求。

Concrete slope protection and concrete anti-seepage wall are technically mature when used in the seepage reinforcement of earth dam. However, the comprehensive evaluation of its actual anti-seepage effect lacks the computational basis. In this paper, finite element method has been used to compute the characteristics of the dam structure in the Changli Reservoir before and after the reinforcement. The results showed that the effect of the anti-seepage system with the concrete slope protection and concrete anti-seepage wall has good effect and the seepage condition of the dam body and foundation is improved. After the reinforcement, the seepage slope and seepage discharge of each area decreased significantly and met the standard requirements.

江苏省水利科技项目（2012071）