Abstract: Aimed at the seepage at Qiyi dam and dam foundation, the paper expatiated on the design and construction of the high pressure grouting cutoff wall. By enclosed well test examination and comparing with the dam saturation lines, the anti- seepage effect of the high pressure grouting cutoff wall was proved to be good.

摘要： 本文针对七一水库大坝及坝基渗漏问题, 阐述了高喷注浆防渗墙的设计、施工, 并通过围井试验检查及大坝浸润线对比, 检验了高喷防渗墙的防渗效果。