Abstract: In the operation process of expansion project of Dahua hydropower station, some function defects and quality problems are found which are threatening the safe use and management of the powerhouse. In this paper, some examples are listed and treatment measures are presented which would enhance the performance of the structures. As well, the advices for design improvement are pointed out, for reference.

Key words: Dahua hydropower station, expansion project, powerhouse structure, function defect, operation solution

摘要： 大化电站扩建工程投运后发现厂房建筑物及设施存在的一些设计功能缺陷或施工质量等方面问题，给厂房运用和管理带来不利因素或安全隐患，笔者列举典型例子，提出处理及对策措施，一定程度上改善和提高了水工建筑物的使用功能和效果。同时提出水工设计方面的改进意见，供借鉴。

关键词: 大化电站, 扩建工程, 厂房建筑物, 功能缺陷, 运行对策