Installation for trapping sediment from riverbed and seabed promoting siltation and erosion protection

Abstract

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 ...

AI Technical Summary

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

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