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介绍了盘石头水库输水洞工作闸门过流规律的试验结果，并将其与水力计算结果进行比较，分析了影响试验与计算结果偏差的因素。指出像盘石头水库输水洞工作闸门这样通常在高水头、小开度工况下运行的情况，其闸孔垂直收缩系数ε不仅与闸前、闸孔的几何条件有关，还与闸前压力有关。垂直收缩系数的取值正确与否是造成计算与试验值出现偏差的主要原因
This paper introduces the test results of the overcurrent law of the working gate of the diversion tunnel in Panshitou Reservoir and compares the results with the hydraulic calculation results and analyzes the factors that affect the deviation of the test and calculation results. It is pointed out that the working gate of water conveyance tunnel in Panshitou reservoir usually operates under high water head and small opening conditions. The vertical contraction coefficient of gate hole ε is not only related to the geometric conditions of gate and gate, but also to the pressure before gate related. The correct value of the vertical contraction coefficient is the main reason for the discrepancy between the calculated value and the experimental value