Headwork stratified water intaking method for Yellow River diversion irrigation district

Abstract

The invention relates to a headwork stratified water intaking method for a Yellow River diversion irrigation district, which has International patent classification (IPC) numbers of E02B1 / 00, E02B 13 / 00, and E02B 7 / 20, and belongs to the technical field of water engineering. In the water intaking method provided by the invention, the effects of intaking water and blocking sand in a stratified way are achieved by adopting a stratified headwork gate, and conveniently opening gates at different stratifications according to the flow rate of the water flow in front of the gate and a water level, sand content, and the distribution rules of upper sparseness and lower thickness, upper thinness and lower coarseness of the sand along a vertical line; the method can respond different water and sediment situations, and is suitable for riverbed adjustment and ensures designed diversion flow rate, so that the benefit of the irrigation district engineering is played effectively. The method can be popularized and applied in the Yellow River diversion irrigation district downstream of the Yellow River, also can be suitable to be used for diversion headwork of other multi-sediment rivers, is simple in structure and flexible in application, can greatly prolong the service life of the headwork gate, and has remarkable economic benefits and social benefits.

Description

Technical field: [0001] The present invention relates to a water intake method for the irrigation area of ​​the Yellow River diversion area, in particular to a layered water intake method for the canal head gate of the Yellow River diversion irrigation area which is often adjusted and changed for the erosion and deposition of the river bed in front of the head gate. The IPC international patent classification number is E02B 1 / 00 , E02B 13 / 00, E02B 7 / 20, belonging to the technical field of hydraulic engineering. Background technique: [0002] The Yellow River is a strongly alluvial river, and the adjustment range of riverbed erosion and deposition is relatively large, and erosion and deposition often occur alternately. In the actual operation of the Yellow River Diversion Canal, the following problems often arise: [0003] (1) The Yellow River diversion gate at the head of the Yellow River irrigation area adopts the traditional single-layer gate chamber design, resulting in ...

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Problems solved by technology

[0006] Aiming at the problem that the Yellow River bed scour and silt adjustment is relatively large, which directly affects the water intake capacity of the head of the Yellow River Diversion Canal, resulting in multiple reconstructions of the head gate and even the entire water delivery canal system, the invention provides a layered water intake method suitable for irrigation areas of the Yellow River Diversion , so that the head gate of the canal can draw water in layers, cope with different water and sediment conditions, adapt to the adjustment of the river bed, ensure the designed water diversion flow, and effectively exert the benefits of the irrigation area project

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