长江三峡两坝间河段汛期通航试验研究

三峡大坝至葛洲坝两坝间38 km河段是连接三峡库区和葛洲坝下游航道的关键航道。两坝间航道穿行于高山峡谷之中,水流条件复杂,是三峡枢纽涉及的航道中较困难的一段,解决好两坝间的通航问题,是三峡枢纽通航的主要环节。因此,提高两坝间河段通航流量对延长通航期具有重要意义。采用增加推轮推力,改善推轮操纵性能和减驳减载等改进措施,可将两坝间河段的通航流量级由上水的20 000 m3/s,提高到45 000 m3/s。

Navigation test in flood season on the reach between Three Gorges Dam and Gezhou Dam in Yangtze River

The 38 km long reach between Three Gorges Dam and Gezhou Dam is the key navigation channel which links the Three Gorges Reservoir Area to the downstream channel of Gezhou Dam.The channel between the two dams traverses the high mountains and gorges which leads that the flow conditions are complicated.It is the most difficult one among all channels that Three Gorges Hydraulic Hinge involves.To solve well the navigation problem between the two dams is the main step of the navigation of Three Gorges Hydraulic Hinge.Therefore,it is very important to improve the navigation discharge and prolong the navigation time.By adopting the measures such as increasing the thrust of the push wheels, ameliorating the manipulation performance of the push wheels,decreasing the barges and cargos,and so on,the navigation discharge degree is possible to be improved from the 20 000 m3/s to 45 000 m3/s for the ship which navigates from the downstream to the upstream.