长江镇扬河段河势变化对航道条件的影响

在分析长江下游镇扬河段河势变化特点及其对航道条件影响的基础上,提出了该河段航道治理的思路.镇扬河段河势变化主要体现在汊道分流比调整和局部深泓主流变化,对该河段航道条件产生了显著的不利影响.针对这些变化特点,提出了航道整治思路:结合水利部门河势控制工程,加强影响航道条件有的重要洲滩及岸线的控制,稳定滩槽格局、适当控制或调整汊道分流格局,维持目前相对有利的航道条件;对局部可能出浅的河段,采取必要的工程措施适当束窄浅区段河道,增大航槽内冲刷能力,提高航道尺度.

Influence on navigable conditions in Zhenyang reach from the change of morphology evolution

Based on analysis of changes and its impact on navigable conditions of morphology evolution in Zhenyang reach,the proposed idea of the river channel regulation is put forward.The regime changes are mainly reflected in the inlet split ratio adjustment and the mainstream of the local thalweg changes.All of these have led to the river channel conditions have a significant adverse impact.In response to these,proposed idea of channel regulation is put forward.It is to strengthen control of the important beach an...