船闸口门区水流结构与连接段航道范围的探讨

从水力学角度和航行条件出发,来认识船闸口门区与连接段的水流结构,探讨连接段的范围。收集概化模型与枢纽物理模型的实验资料,采用归纳、总结和分析对比的方法,对概化和枢纽工程船闸引航道出口的水流结构、形态及回流长度等规律进行总结和讨论,对口门区与连接段的水流与航行条件进行分析。结果表明:概化模型的回流长度l1=7.0b比枢纽模型l1=4.6b要长;连接段的同岸与异岸连接,实质是主航道航线与引航道轴线夹角的大小;文中连接段长度是推轮能克服水流作用于船舶(队)漂移时的长度,否则需重新确定。

Discussion on flow structure of the entrance of lock and the range of junction block

From the view of hydraulics and navigation condition,the flow structure of the entrance area of the lock and the junction block are further recognized,and the range of the junction block is also discussed.On the basis of experimental data of generalized model and physical model of the junction,using induction method,the law of the flow structure,flow form and backflow length at the entrance area of shiplock approach channel are summarized and discussed,the flow and the navigation condition of entrance area and connecting section are analyzed.The results indicate that backflow length of the generalized physical model l1=7.0 b is longer than that of the junction model l1=4.6 b.The length of connecting section is the excursion length that the push tug overcomes the flow acting on ship,otherwise it must be ascertained again.