Abstract: By analysis of the monitoring results of seepage pressure and seepage flow of high-pressure diversion branch pipe and the drainage gallery, combined with inspection of the external structure at the project site as well as the special tests on seepage water from drainage gallery and the deposit, the cause reasons for anomaly in operation and its impact on safety are analyzed. On this basis, the seepage and operation behavior of high-pressure diversion branch pipe are comprehensively evaluated, for reference.

Key words: high-pressure diversion branch pipe, drainage gallery, seepage, deposit, analysis, Xianyou , pumped storage power station

摘要： 对引水高压支管及其排水廊道的渗压、渗流量监测结果进行分析，对现场外部结构进行巡查，并委托科研单位对巡查发现的排水廊道渗水和析出物进行专项检测，对异常性态开展成因及安全影响分析，在此基础上综合评价引水高压支管的渗流运行性态。

关键词: 引水高压支管, 排水廊道, 渗流, 析出物, 分析, 仙游抽水蓄能电站