雁型分流坝航道整治效果研究

在长时间的运行过程中,天然分汊航道容易出现泥沙淤积、航道变形及河口区后方浅滩冲刷等问题。针对天然分汊航道,融入"生态水利"的治理理念,创新设计了一种雁型分流坝航道整治建筑物,并对其可行性进行试验研究及分析论证。通过与传统的鱼骨坝的对比试验研究,雁型分流坝在分水及排沙方面性能更优;通过位置布置、结构构造的率定试验,对雁型分流坝在实际工程中的应用进行优化。通过论证,雁型分流坝航道治理方案在技术、经济及稳定性方面均可行,同时也可推广至河道治理、河湖整治及有相关要求的景观工程。

Research on channel regulation effect of wild goose-shaped diversion dam

During long-term operation,the natural branching channels appear some problems frequently such as sediment accumulation,channel deformation and shoal scouring in the rear area of the mouth area etc.Taking the natural branching channel as the object,we design a kind of channel regulation structure innovatively named wild goose-shaped diversion dam with the idea of ecological water conservancy,and carry out the experimental research and analytic demonstration about the feasibility of the wild goose-shaped diversion dam.Compared with the traditional fish-bone dam,wild goose-shaped diversion dam has better performance in water diversion and sediment discharge.Through a series of calibration experiments of position arrangement and structure,the application of wild goose-shaped diversion dam in practical engineering is optimized.The channel regulation scheme of wild goose-shaped diversion dam is feasible in technology,economy and stability by demonstrating,and the wild goose-shaped diversion dam can also be applied to river and lake renovation works,and the same to the landscape engineering with relevant requirements.