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Method and system for repairing scoured riverbed on downstream of dam body

A repair method and repair system technology, which is applied in the direction of dams, river regulation, water conservancy projects, etc., can solve problems such as difficult repair, uneven flow rate, long-term erosion of the river bed, etc., and achieve the effect of low cost and simplified structure

Active Publication Date: 2019-07-26
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the riverbed downstream of the dam body is scoured for a long time and difficult to repair due to excessive water potential energy, excessive flow velocity and uneven flow velocity, the present invention provides a method and system for repairing the scoured riverbed downstream of the dam body with remarkable effects and energy saving. Suitable for long-term continuous repair work

Method used

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  • Method and system for repairing scoured riverbed on downstream of dam body
  • Method and system for repairing scoured riverbed on downstream of dam body
  • Method and system for repairing scoured riverbed on downstream of dam body

Examples

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Embodiment 1

[0039] Embodiment 1: as figure 1 As shown in the figure, an energy dissipation pool is built at the bottom of the downstream directly opposite the overflow section of the dam body, and an energy dissipation wall is built downstream of the energy dissipation pool. After that, the flow velocity can be reduced. Firstly, from the perspective of reducing the flow velocity during the drainage period, the degree of scouring of the downstream riverbed can be reduced, and then a riverbed restoration system can be built on the downstream riverbed of the dam body.

[0040] The specific method is firstly to install the wheel seat on the concrete wall on the back water surface of the energy dissipation wall and install the pulley. There are three ways to install the wheel seat here. The first method is to directly install the fixing seat on the concrete wall on the back water surface of the energy dissipation wall. , the fixed seat is equipped with a wheel base, and the wheel base is equip...

Embodiment 2

[0045] Embodiment 2: In order to make the lower crawler belt carry each shovel and sand bucket close to the bottom of the river bed, this embodiment sets the upper and lower crawler wheels below the upstream crawler wheels on the basis of embodiment 1, and is pulled by the counterweight to the belt pulleys. Pull down to increase the distance between the upper layer of the track and the lower layer of the shovel.

[0046] The methods in the above embodiments can repair the river bed damage caused by different water flow rates in the downstream of the dam body, and can balance the uneven sediment accumulation and sand washing loss at the bottom of the river bed, and can not only repair the river bed downstream of the overflow section of the dam body, because It has the function of lateral movement, and can also repair the riverbed downstream of the water retaining section of the dam body. In addition, the axle seat of each crawler wheel can be passed through such as Figure 15 ...

Embodiment 3

[0047] Embodiment 3: A repair system for the scoured riverbed downstream of the dam body. A fixing seat is installed on the concrete wall on the back water surface of the energy dissipation wall downstream of the overflow section of the dam body. The fixing seat is fixedly connected to the front shaft seat, and the front shaft seat is provided with a relief groove. , the end of the trough is laterally fixed with an axle and track wheels 509 are installed. There is a pontoon 505 floating on the water surface at the downstream water level. The pontoon 505 is connected to the downstream upper traction seat 503 downwards through the traction zipper 504. The downstream upper traction seat 503 is provided with a relief groove, and the end of the relief groove is horizontally fixed with a shaft and installed with a track wheel 509. On the track wheel 509 in the upstream movable shaft seat and the track wheel 509 in the upper fifth wheel 503 of the downstream, the crawler belt 7 is se...

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Abstract

The invention discloses a method and system for repairing a scoured riverbed on the downstream of a dam body. An energy dissipation wall is constructed on the downstream in the directly facing direction of a dam body overflow section; the downstream face concrete wall of the energy dissipation wall is provided with a wheel seat and a belt pulley, a fixed or movable belt pulley is arranged on the downstream water level, and a track surrounds the upstream and downstream belt pulleys; sediment shovel loaders are fixed to the track at certain intervals; and the multiple sediment shovel loaders located on the upper side of the track are pushed to advance through water flow power, the track is forced to rotate to drive the sediment shovel loaders on the lower part of the track to be pushed towards the front upstream, collected sediment in arc-shaped loader bodies falls to enter a sunken area to repair the sunken area, and the downstream stacked sediment can be carried to the upstream scouredarea through continuous circulation. Flood discharge water flow residual energy is utilized as driving force for riverbed repairing, the scoured riverbed on the downstream of the dam body can be continuously and effectively repaired for a long term, and adjusting can be conducted according to the geometrical morphology and topographic conditions of the riverbed.

Description

technical field [0001] The invention belongs to the technical field of river bed restoration downstream of a dam body in water conservancy and hydropower projects, and in particular relates to a restoration technology of the scoured river bed downstream of a dam body. Background technique [0002] The main body of the dam includes a water retaining section and an overflow section. The overflow section is used for regular drainage. In addition to providing irrigation water for downstream farmland and preventing river flooding, the dam body can also significantly reduce sediment deposition in the estuary and protect the estuary area. environment of. However, during the drainage period of the dam body, the discharge water energy from the overflow section is high, the flow velocity is fast, and the sediment content is large. Usually, a stilling tank is used to dissipate its energy, and the residual energy of the water flow after passing through the stilling tank can still be dis...

Claims

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Application Information

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IPC IPC(8): E02B3/02E02B3/10E02B8/06E02F5/28
CPCE02B3/02E02B3/10E02B8/06E02F5/28Y02A10/11Y02A10/30
Inventor 郭文献王鸿翔
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER