尾水閘門安設在水电站尾水管的末端,用以攔阻下游尾水而进行水电站水了部分的檢修工作。因尾水管常年处于下游水位之下,故閘門在无压情况下关閉,然后用抽水机抽干尾水管內积水,作用在閘門上的水压力也就逐漸增加。正是由于这种运用的特殊性,在尾水閘門設計中經常遇到的最大困难就是閘門的初期防漏問題。显然我們是要求閘門在无压情况下就具有 The tailgate is installed at the end of the tailrace of the hydropower station to block the downstream tail water and carry out overhaul work on the water part of the hydropower station. Due to the draft tube perennial in the lower reaches of the water level, so the gate closed in the absence of pressure conditions, and then pumping water drained pipe trap water, the role of the water pressure on the gate will gradually increase. It is because of the particularity of this application that the most common difficulty encountered in the design of a tail gate is the initial leakage prevention of the gate. Obviously we are asking the gate to have no pressure