摘要： 本文分析了大山口主坝基础渗漏量大、扬压力高的可能原因，叙述了处理设计和施工方法，对工程处理效果进行了分析，总结了经验教训。

Abstract: This paper analyzed the reasons possible why seepage quantity is large and uplift pressure is high in foundation in main dam, the treatment design and construction method have been described. The implementation effect has been analyzed and experience has been attained from it.?