关键词: 混凝土面板, 抽水蓄能, 渗漏, 检测分析, 瞬变电磁法

Abstract: Local leakage in the inlet and outlet area of upper reservoir of Shisanling pumped storage power station is large, and there may be centralized leakage channels. In order to determine the main part of leakage, five survey lines are arranged in power station. The small loop multi-source and multi-component transient electromagnetic method is used to detect the specific part of leakage. The multi-component data from different emission sources are comprehensively used to carry out joint inversion. Combined with the seepage monitoring and analysis data during operation in the inlet and outlet area, it is obtained that the leakage is mainly occurred in low temperature seasons, which has no obvious correlation with groundwater level. And there is an anomalous leakage area with a length of 10 m in the inlet and outlet area. The detection results provide a technical support for the search and treatment of centralized leakage channels at inlet and outlet. 

Key words: concrete panel, pumped storage, leakage, detection and analysis, transient electromagnetic method