葛洲坝二号船闸输水廊道阀门,孔口尺寸5×5.5米,水头27米,阀门承受总水压力1000多吨,是国内最大的船闸廊道工作门。阀门设计开始采用平板门方案,由于水头高,孔口尺寸大,启门力太大,且门槽气蚀问题不易解决。目前国外已建中、高水头船闸廊道阀门,较多采用反向弧形门。特别是美国三十年代已开始使用反向弧形门。现代更为广泛采用。 Gezhouba two locks on the waterway corridors, orifice size 5 × 5.5 meters, 27 meters head, the valve withstands the total water pressure of more than 1,000 tons, is the largest shiplock corridor door. Valve design began using the flat door program, due to the high head, large aperture size, Kai door too much power, and the door cavitation problem is not easy to solve. At present, foreign countries have built medium-sized, high-head shiplock corridor valve, more use of reverse arc door. In particular, the United States began to use the reverse arc door in the 1930s. Modern more widely used.