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皎口水库底孔及弧形闸门在建成后的运行中,同时出现底孔空蚀及闸门振动问题。浙江水科所分别于1977年6、7月和1978年9～11月进行了两次原理观测。根据两次观测成果,本文认为皎口水库底孔空蚀与闸门振动是相互独立的两个问题,前者由检修闸门井进水等不良的水流流态造成,而后者由于止水部件的漏水造成,两者之间并无联系。底孔空蚀破坏的主要原因有两方面:1.检修闸门井进水(图1),也就是泄水时水流从底孔进口及检修闸门井同时进入,两股水流的相互作用,使门井后顶部压力显著降
After the completion of the operation of the bottom hole and the arc gate of the Jiaokou Reservoir, cavitation of the bottom hole and vibration of the gate occur simultaneously. Zhejiang Water Division in June 1977 and July 1978 and September to November conducted two principle observations. According to the results of the two observations, this paper considers that the cavitation at the bottom of the Jiaokou Reservoir and the vibration of the gate are two independent issues. The former is caused by the poor water flow patterns such as the intake of the sluice gate and the latter due to water leakage from the water stop There is no connection between the two. Cavitation erosion at the bottom of the hole for two main reasons: 1. Maintenance of gate well water (Figure 1), that is, when the water flow from the bottom of the hole at the entrance and maintenance of access to wells at the same time, the two flows of water to the door The pressure at the top of the well was significantly lower