长江口北支河段演变分析及航道治理思路初探

长江口北支河段区域条件优越,发展潜力巨大,航道条件极为重要。掌握北支河段演变特点是北支航道治理的基础,探究航道治理思路是下步北支航道系统治理的重要技术支撑。通过收集长江口北支河段近年来的水文地形资料,分析该河段近期演变特点及其河道演变趋势,根据上、中、下段河道演变和航道条件变化情况,初步提出了各段的航道治理思路。研究表明,北支航道整治宜在已有河势控制工程的基础上,采取"深水深用、浅水浅用"的分段治理思路。

River regime and regulation of Beizhi reach in lower reach of the Yangtze River

The regional condition of Beizhi reach in the lower reach of the Yangtze River is superior,the development potential is huge,and the channel condition is very important.It is important to master the evolution characteristics of the Beizhi reach,which can provide reference for the synthesized waterway regulation of Beizhi reach.Based on the hydrologic and topographic data of Beizhi reach in recent years,we analyze the river evolution characteristics and evolution tendency.According to the present situation need,we propose the train of thought on waterway regulation of each reach.The result shows that waterway regulation for the Beizhi reach branch shall be implemented on the basis of the existing regime control engineering,and taking the principle of proper utilization according to the water depth.