Installation for trapping sediment from riverbed and seabed promoting siltation and erosion protection
An anti-scouring and seabed technology, which is applied in sea area engineering, coastline protection, water conservancy engineering, etc., can solve the problems of reducing sediment movement power, device function loss, reducing the cross-sectional area of flow, etc., to achieve river disturbance and water blocking Small effect, small water blocking effect, high effect of promoting sedimentation
Inactive Publication Date: 2007-05-30
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
Its disadvantages are: 1) Throwing the frame bundled into a string by the four-sided hexagonal frame into the vicinity of the accumulation body constructed in the near-shore water must cause local scour and form a scour pit
The formation of scour pits will continue to submerge these accumulations, and the function of the device will continue to be lost; 2) This accumulation reduces the cross-sectional area of the flow, prevents the movement of water flow, and becomes a flood discharge obstacle during the flood period; 3) This accumulation reduces the flow of water While the energy is reduced, the power of sediment movement to the vicinity of the accumulation body is also reduced, and the source of sediment is reduced. Therefore, the efficiency of promoting sedimentation is not high
Method used
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[0018] As shown in Figure 1, the present invention includes: a floating curtain 1, a floating body 2, a sand passing window 3, and an anchoring member 4. The floating body 2 is arranged on the upper edge of the floating curtain 1, and the sand passing window 3 is arranged at the bottom of the floating curtain 1. The fixing member 4 is provided on the lower edge of the floating curtain 1.
[0019] The floating curtain 1 is provided with cables every 20-100 cm at its lower edge, and the width of the floating curtain 1 is proportional to the uniformity of the flow velocity distribution.
[0020] In the floating curtain 1, the lower edge cable is tightly tied to the ring of the anchoring member 4, or the lower edge of the floating curtain 1 is directly embedded in the anchoring member 4.
[0021] The floating body 2 is a hollow sealed body whose purpose is to float the floating curtain 1 in a body of water. The volume of the floating body 2 is proportional to the square of the water f...
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This is a kind of riverbed and seabed bedload withholding, silt promoting and anti-scouring device belonging to the water conservancy technologic field. The present invention includes: floating shade, floating body, sand permeating window and anchoring member. The floating body is equipped at the upper of the floating shade, the sand permeating window is equipped at the bottom of the floating shade, and the anchoring member is equipped at the lower part of the floating shade. The water preventing effect of the present invention is small, not flood detention, won't minify the moving motivity of silt, and won't change the original flowing direction. Therefore it will become a kind of effective silt promoting device with good flood preventing effect, little change of sideway flowing field, and without obvious partial scour.
Description
Technical field [0001] The invention relates to a device belonging to the technical field of water conservancy engineering, specifically, a device for intercepting and accelerating sedimentation and anti-scouring of riverbed and seabed sediment. Background technique [0002] On the surface of a river bed or seabed that can be washed away, when the sediment-carrying capacity of a water flow is greater than the sediment content of the upstream flow, erosion or erosion will occur at that place, and siltation will occur on the contrary. Erosion and siltation are the result of the tendency of local hydraulic transport of sediment to balance. Erosion is a kind of disaster problem frequently encountered at home and abroad, such as river bank collapse and bank collapse caused by river bank erosion, bridge collapse, coastal erosion, and the scrapping of hydraulic structures. With the drastic reduction of sediment in the Yangtze River, the Yellow River and other major rivers, the original ...
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IPC IPC(8): E02B3/04E02B8/06
Inventor喻国良
OwnerSHANGHAI JIAOTONG UNIV