混凝土防渗墙加固技术在病险土坝加固中的应用

Technology of strengthening concrete anti-seepage wall in earth dam reinforcement

病险土坝坝体防渗加固处理,通常可选用混凝土防渗墙、高压喷射灌浆、劈裂灌浆、冲抓套井防渗墙、土工膜防渗等措施。据我国土坝失事情况统计分析,目前病险土坝加固方案,较常用的有混凝土防渗墙。以卢村水库土坝采用混凝土防渗墙加固为实例,分析混凝土防渗墙加固技术在病险土坝加固中的应用情况和经验,对于目前我国开展的病险水库除险加固有一定的指导借鉴作用。

The approaches used for seepage prevention of earth dam usually include concrete anti-seepage wall, high-pressure gunite grouting, split grouting, anti-seepage wall of flush-grab sleeve wells and geomembrane. According to statistics of incidents of earth dam, the reinforcement of earth dam normally apply concrete anti- seepage wall. Taking the Lucun Reservoir as example, analysis is made to the application of concrete anti-seepage wall in earth dam strengthening. The experiences accumulated from this practice may be of great help to the strengthening of other earth dam in China.