长江下游鳗鱼沙浅滩整治工程措施的初步研究

通过分析鳗鱼沙浅滩河床演变规律及其碍航特征,综合考虑各方面因素,确立了浅滩整治原则与思路,并建立扬中河段河工模型,针对浅滩整治工程措施进行了深入的试验研究,共提出三大类整治工程布置方案。研究结果表明,顺应河道自然属性,因势利导地采用稳固江中心滩的整治工程措施,保持稳定的水下分汊河型,使得两侧深槽满足深水航道尺度要求,并符合两岸岸线利用需求,技术可靠且现实可行,也值得其他类似浅滩治理所借鉴。

A preliminary study on improving measure of Manyusha Shoal in the lower Yangtze River

Based on the analysis of alluvial process of the shoal reach and consideration of various factors, the basic principles and thoughts for waterway improvement were presented.Further,physical model of the Yangzhong reach was established to make test study on waterway improving measures and three disposal schemes of training works were also presented.The results show that the improving measures to protect the submerged central bar in the reach,to keep stable the submerged braided channel and to fill the requirements of waterway size in tune with the river natural quality and in accordance with the demands of the river bank utilization,is credible in technology and feasible in practice.