沙溪口水电站船闸下引航道口门区通航水流条件研究

船闸引航道口门区水流条件的好坏直接关系到船舶进出船闸的安全。针对沙溪口水电站船闸引航道口门区水流条件差、水深不足、横流较大等问题,建立电站河段整体物理模型,并结合船模航行试验,对船闸下引航道口门区通航水流条件进行试验研究,并提出优化工程方案。优化方案2试验表明:通过筑坝、新建明渠和底部透空式隔流堤工程,下引航道口门区通航水流条件得到明显改善,通航水流条件基本满足规范要求。船模航行试验验证船舶可以安全平稳地通过口门区,且船舶操纵参数均在要求范围以内。

Navigable flow condition at entrance area of lower shiplock approach channel in Shaxikou hydropower station

The flow condition at the entrance area of the lock approach channel is directly related to the safety of the ship in and out of the lock.For the problems of disadvantageous flow condition,insufficient water depth and big transverse velocity at the entrance area of the lower shiplock approach channel in Shaxikou hydropower station,the whole physical model of upper and lower reaches near the hydroelectric station are established.Combining with the ship model navigation test,we study the navigable flow condition at the entrance area of the lower shiplock approach channel and propose the optimum scheme.The test results of the second optimum scheme shows that,by building a dam and excavating new open channel and permeable partition dikes at the bottom,the navigable flow condition at the entrance area of the lower approach channel is improved significantly and meets basically the specification requirements of the navigation flow condition.The ship model navigation test shows that the ship can pass through the entrance area safely,and the ship maneuvering parameters are controlled within limits of requirements.