长江中游下临江坪至陈二口河段航道尺度提升可能性探析

Potential improvement of channel dimension of Xialinjiangping to Chenerkou in the middle Yangtze River

长江中游下临江坪以上相邻河段最小航道维护水深为4.5 m,长江中游城陵矶以下相邻河段最小航道维护水深为4.2 m(试运行),而处于两河段之间的宜昌下临江坪—城陵矶河段最小航道维护水深不足4.0 m,呈现出典型的"两头深、中间浅"的格局,致使船舶在中、长距离运输时,装载能力难以充分发挥。为不断提高航道服务质量,满足宜昌、枝城等港口、船舶运输单位和沿江厂矿企业对航运的要求,对近坝河段水位、流量、航道特点、航道尺度核查等数据进行综合分析,提出提升下临江坪至陈二口河段航道维护尺度至4.5 m×150 m的可行性。

The minimum channel maintenance depth of the adjacent channel above Xialinjiangping of the middle Yangtze River is 4. 5 m,while that below Chenglingji is 4. 2 m( trial operation). But the minimum channel maintenance water depth between Xialinjiangping and Chenglingji is less than 4. 0 m,showing a typical"deep at both ends and shallow in the middle "pattern,which makes it difficult to fully load the ship during medium and long distance transportation. In order to improve the quality of waterway services,and meet the shipping requirements of ports,shipping units,and factories along the River in Yichang and Zhicheng,we carry out a comprehensive analysis of the water level,flow,channel characteristics and channel scale check,and propose the feasilbility of improving the channel maintenance dimension of Xialinjiangping to Chenerkou in the middle Yangtze River to 4. 5 m×150 m.