关键词: 大朝山水电站, 大坝渗流, 监测设计, 工程措施, 渗流分析

Abstract: Based on the arrangement of seepage monitoring instruments and the monitoring results during operation of Dachaoshan hydropower station, the seepage variation law of dam body and foundation during operation is analyzed, and the seepage distribution, intensity, source, flow direction and its variation are understood. Based on this, it can be judged that whether there is a serious concentrated leakage zone and whether there is an unfavorable trend change under the effect of reservoir water. At the same time, to avoid the shortcomings of using single observation item to analyze dam seepage state, the multiple factors affecting the dam seepage are organically linked, and the relationship between the influencing factors and the effect quantities are considered. By the above analyses, a deeper and more accurate understanding of the seepage distribution, path and development trend of the dam is obtained, which will be helpful for better seepage control management in the future, and can provide more basis for the analysis of engineering treatment effect, as well as provide reference for other projects.

Key words: Dachaoshan hydropower station, dam seepage, monitoring design, engineering measure, seepage analysis