关键词: 土石坝, 原位试验, 渗漏, 勘察

Abstract: All the dams of small reservoirs in Zhaoyuan City are earth-rock dams. This paper comprehensively describes the investigation methods used in the actual leakage investigation process, such as drilling, in-situ testing, geotechnical testing, geophysical prospecting and other methods, which have achieved a large number of application results in practical projects. The author summarizes the method of preliminarily judging reservoir seepage by using the changes in soil properties in practical work, and applies this method to engineering examples. Through on-site water injection tests, the seepage channels of the dam are finally determined, and the feasibility of this method in finding dam seepage is proved. This method is simple, effective, convenient and fast to use. It can quickly lock the causes of dam seepage and provide directions for further seepage analysis. It has certain reference value for future leakage investigation of earth-rock dams.

Key words: earth-rock dam, in-situ test, seepage, investigation