Abstract: Emptying of high-pressure pipe lines is an effective way in overhaul. But for the sake of outside-water pressure, there are some unsafe factors during the emptying process. Taking Shisanling pumped storage power station as an example, the full process of emptying high-pressure pipeline was described in this paper, as well the involved key technique and result evaluation were given and analyzed, which was worthy reference to the pumped storage stations of the same style.

摘要： 压力管道的放空是进行水道系统检修的有效手段，但由于受外水压力的影响，管道放空存在一定的不安全因素。本文通过对十三陵抽水蓄能电站压力管道放空的全过程叙述, 对压力管道放空所涉及的关键技术问题进行重点分析，并对放空结果进行了评价,为同类型蓄能电站压力管道检修手段提供了有益的参考。