长江城背咀河段滩险整治船模通航试验研究

The study of ship model experiment on chengbeizun reach in Yangzi river shoal regulation

城背嘴滩位于长江上游泸渝河段泸县弥沱镇附近.该滩上段紧接一半径仅220m的急弯,是泸渝段著名的弯、浅险滩.本文介绍的长江城背咀河段滩险整治船模通航试验表明,80m航漕方案与60m航漕方案均可满足1000t级船队通航要求,但各有优缺点.80m航漕方案航漕流速稍高于60m航漕方案,因而船队上行航速略低;但从冲淤的角度来讲,80m航漕方案略优.船模试验还对船队的航线和驾驶方式等提出了意见.船模试验为该滩整治提出了有价值的成果.

Chengbeizun shoal lies in Luzhou-Chongqing Reach upstream Yangzi river, near Mituo town of Luxian county. It is a well-known curve and shallow dangerous shoal, adjacent to a sharp bend with a radius 220m upstream tightly. The ship model experiment on Chengbeizun Reach in Yangzi River shoal regulation is introduced, it shows both the scheme of 80 and 60 m channel width can be true of navigation by 1000t ship teams. The velocity in channel 80m width is faster slightly than channel 60m width, so ship sail upward slower. But in point of view degradation and deposition, the scheme of 80m width is the better. The ship teams sea route and steer manner are advised. Some valuable results by ship model test about regulation scheme are put forwarded also.