Abstract: The tail water gate of a hydropower station could not be installed in place during the rehabilitation. By checking, it was found that the tail water revetment was partially collapsed, the dam section connecting the power house and water release sluice was caved and the gabion stone cages for riprap were destroyed mostly. After analyzing the probable causes, rehabilitation was carried out to the revetment and the cavity, and concrete protection was established for the riprap of water release sluice. Furthermore, suggestions were given for routine operation and management.

Key words: revetment, collapse, treatment

摘要： 某水电站机组大修时尾水闸门无法就位，检查发现尾水护坡有塌陷、厂房和泄水闸连接坝段下有空洞、泄水闸海漫格宾石笼基本冲毁。对以上情况发生原因进行了认真分析，对护坡和空洞进行了修复处理，对泄水闸海漫进行了混凝土保护，并对运行管理提出了建议。

关键词: 护坡, 塌陷, 处理