Method for creating three-stage flow passage of meandering riverway in lower Yellow River
A technology for river courses and downstream, which is applied in river regulation and other directions, and can solve the problems of large changes in the project's slippery parts, loss of control and guidance, and unfavorable flood control, so as to stabilize the river regime, prevent overburden, and enhance river channel flood and sediment transport effect of ability
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[0017] Such as figure 1 , 2 As shown, the control and guidance engineering dam is built on the outermost side of the river. The control and guidance engineering dam is a spur group composed of impermeable earth-rock dams according to the radius of the bend. The dam crest elevation is the design regulation flow water level plus 1m superelevation. A submersible submerged dam shall be built at the delivery section at the tail of the control and guidance project dam, and the elevation of the dam crest shall be equal to the regulation flow water level. On both sides of the Zhongshui river channel in the straight river section between the two bends, permeable pile dams are arranged, and the crest elevation of the pile dams is 800m above the local level 3 The water level at / s flow is the same.
[0018] After the completion of the plan layout construction of the above-mentioned river course improvement project, at a flow rate of 800m 3 When the small water is less than / s, all riv...
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