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一、概述汉江下游河槽泄洪能力不平衡(上大下小),并受汉口长江高水顶托的影响。为避免下游经常发生洪水灾害,1956年在汉江下游修建了杜家台分洪工程。洪水经分洪闸、分洪道引入南岸东荆河下游泛区注入长江。杜家台分洪闸闸址位于湖北沔阳县仙桃镇下游约6公里。该闸和30个闸孔,每孔净宽12.12米,采用三级消能,消力池护坦总长52.5米,设计分洪流量4,000秒立米,为上游河道来量9,000秒立米的44.5％。为使工程安全经济,进行了整体河
First, an overview of the lower Hanjiang River flood discharge capacity imbalance (from big to small), and by the Hankou impact of the Yangtze River high water support. In order to avoid frequent downstream floods, the Dujiantai flood diversion project was constructed in the lower Han River in 1956. After flood diversion floodgate, flood diversion channel into the south bank of the lower reaches of Jing River into the Yangtze River. Du Jia station Fenghuazha gate address is located in Hubei Xingyang Xiantao downstream about 6 km. The gate and 30 gate holes, each hole net width of 12.12 meters, the use of three energy, retaining pool Tam tank total length of 52.5 meters, designed flood diversion flow of 4,000 seconds of legislation, to the upper reaches of the river to measure 9,000 seconds of 44.5%. To make the project safe and economical, carried out the whole river