Abstract: Because of poor design, construction and management, leakage exists in many concrete gravity dams constructed earlier in China. Treatment by PVC composite geomembrane has the advantages such as convenient construction, low cost, short construction period, small quantity and not affected by rain or chilliness in process. This paper discussed the construction technique of installing geomembrane on upstream face of concrete gravity dams, in which very good anti-seepage effect was achieved.

摘要： 由于设计、施工、管理等种种原因，我国早期兴建的混凝土坝坝体渗漏问题严重，亟待加固处理。PVC复合土工膜在坝体防渗加固处理中具有施工方便、造价低、工期短、不受气候条件影响、节省工程量等优点。对混凝土坝体上游面设置土工膜防渗施工技术进行分析论述，采用PVC复合土工膜防渗处理，防渗效果良好。