为了检测大功率振冲器对三峡二期围堰深水抛填风化砂砾的加固效果，根据原位物理力学性能指标检测结果，对加固效果进行了总结分析。分析表明，加固处理后的堰体物理力学参数满足设计要求，加固效果良好。

The second stage cofferdam was formed by filling weathered rock soil under 60 m deep in water in the main riverbed. To make the materials more close,large power vibrators were used to compact the filling material. In order to detect the vibro-compaction effects on filling rock soil,in-siteand lab tests were conducted to investigate its physical and dynamic properties The results show that all parameters indexes of the cofferdam can satisfy the design demand and its reinforcement effect is well