Abstract: In this paper, the arrangement and hydraulic calculation of the filling port on lock culvert behind the valve are dealt with and the effects of the filling port upon the pressure behind the valve are searched for. Furthermore, the analysis method is checked by model testing data. As shown in the result, we can raise the pressure in culvert behind the valve by filling water to this area. By contrasting the calculation with experiments, it is clear that the analysis method is reasonable for the calculation of the filling port on lock culvert.

Key words: culvert, valve, filling port, water pressure, flow rate, section of flow constriction

摘要： 在高水头船闸中,如何避免或减小封闭式廊道阀门后廊道内出现较大的真空值,以减少廊道内可能出现的空蚀破坏,是研究与设计高水头船闸输水系统中的一个很重要的问题。本文探讨了阀门后廊道顶部通水孔的布置,并用数值计算方法对通水孔的水力特性进行了计算。分析了通水孔的效用及它对阀门后廊道内水力因素的影响。同时,用模型实测资料对分析计算方法进行了验证。

关键词: 廊道, 阀门, 通水孔, 水压力高程, 流量, 水流收缩断面