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当设计和建造流量超过500立米/秒的巨型土渠时,必须这样计算其过水横断面和纵断面,即使其在将来运用过程中不发生导致水渠在平面上失去稳定性(形成蛇曲)和过水能力降低的河床演变。基本上在无粘性土基上的水渠静力和动力稳定河床的一些水力学计算方法,在水渠流量不超过500～600立米/秒(如印度——巴基斯坦的一些水渠、卡拉库姆渠等)的情况下曾经受了考验。同时,在水渠工作的多年期间或植物生长期内形成的演变(淤积和冲刷),在一系列水渠上被观察到了。过水流量达1000立米/秒以上的巨型土渠的水力学计算方法需要解决。为此必须总结苏联和国外现有巨型土渠的原型观测资料;拟定具有非粘性土和粘性土天然河床的巨型土渠在
When designing and constructing large earthworks with flow rates in excess of 500 m / s, it is necessary to calculate the cross-section and profile of the water passage in such a way that its loss of stability in the plane leading to the formation of snakes does not occur in future applications And the riverbed with reduced water capacity evolved. Hydrodynamics of hydrostatic and dynamic stable channels in basically non-cohesive soil foundations at channel flow rates of no more than 500-600 m / s (eg, some in India-Pakistan, Karakum, etc.) The case has been tested. At the same time, the evolution (siltation and scouring) that formed during many years of canals or during the plant growth period was observed on a series of aqueducts. The hydraulic calculation method of huge canals with water flow rate of more than 1000 m / s needs to be solved. To do this, it is necessary to summarize the prototype observation data of the existing large-scale canals in the Soviet Union and abroad; to draft a large-scale canopy of natural riverbed with non-cohesive soil and cohesive soil