引航道出口形态对泥沙淤积影响的数学模型研究

以位于灌河南岸、沟通灌河与通榆河的航运通道的响水船闸下游引航道为例，通过数学模型手段，研究引航道出口形态对泥沙淤积的影响．针对本河段除具有一般潮汐河段船闸引航道的淤积特性外，还由于引航道口门处有由鸡心岛阻隔形成东西两汊，而独具特性的状况．对4种方案进行模拟计算，结果表明引航道口门形态对引航道的泥沙淤积有较大的影响．

Numerical model for effects of outlet shapes of approach channels on sediment deposition

With the approach channel on the lower reach of the Xiangshui ship lock as an example, which is located on the south bank of the Guanhe River and is a navigable channel connecting the Guanhe River and the Tongyuhe River, the effects of the outlet shapes of the approach channel on its sediment deposition are studied with a numerical model. In consideration of the fact that the waterway of the river section is separated into the east and west branches by the Jixing Island at the outlet of the approach channel, not only does the channel have common characteristics of sediment deposition in general tidal rivers, but also has its own characteristics. By numerical simulation of sediment deposition in the approach channel according to four schemes of outlet design, it is concluded that the outlet shape has great effects on sediment deposition in approach channels.