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A device and method for driving river sediment redistribution

A redistribution and sediment technology, applied in river regulation and other directions, can solve the problems of large manpower and material resources, and achieve the effects of energy saving, obvious changes, and low device cost

Inactive Publication Date: 2016-07-06
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the progress of society, humans have been able to use large-scale mechanical equipment to excavate river channels to remove silt, but this method requires a lot of manpower and material resources

Method used

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  • A device and method for driving river sediment redistribution
  • A device and method for driving river sediment redistribution
  • A device and method for driving river sediment redistribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This embodiment is a method for driving the redistribution of river silt, and the method includes the following steps:

[0020] Identify areas of the stream that are to be prevented from silting or that need to be cleared. First of all, find the location where sediment is easy to deposit below the water level line in the flood season in the river channel, so as to determine the part where the river channel sediment needs to be removed. The sediment in the river channel is usually deposited at the position where the water flow changes from a torrent to a slow flow, and is affected to a certain extent by the Coriolis acceleration produced by the earth's rotation, scouring one side of the river bank while depositing sediment on the other side. On the side where the silt is deposited, the river flow is stable, and the silt in the water is easy to settle, so the silt is easy to deposit. The main idea of ​​this embodiment is: by laying a device that uses natural water flow t...

Embodiment 2

[0027] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment regarding the oscillation of the agitating body array. The swing of the agitating body array described in this embodiment is a composite wave of stripe wave along the direction of water flow and wave perpendicular to the direction of water flow.

[0028] The oscillation generated by the stirring array described in this embodiment is a kind of fluctuation, which is mainly a longitudinal fluctuation along the direction of water flow, accompanied by a horizontal fluctuation, and the combination of the fluctuations in the vertical and horizontal directions forms a complex fluctuation. This fluctuation mainly produces up and down agitation along the direction of water flow, causing turbulent flow with vortex in the water flow, and the vortex makes the sediment on the surface of the riverbed float up and be washed away by the water flow.

Embodiment 3

[0030] This embodiment is an improvement of the above-mentioned embodiment, and is a refinement of the oscillation of the agitating body array in the above-mentioned embodiment. The swing of the agitating body array in this embodiment is twisting along the axis of the water flow direction.

[0031] The agitating body also produces a kind of twist of its own while generating the swing of the up and down motion, and this twist can further increase the complex flow of the turbulent flow with the vortex in the water flow, making the agitation more effective.

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Abstract

The invention relates to a device and a method for driving redistribution of river channel sedimentation silts. The device comprises anchorage points arranged at the upstream of water flow, wherein the anchorage points are connected with strip-shaped flexible traction belts arranged vertical to the water flow direction through anchorage ropes; and the traction belts are connected with a plurality of stirring bodies through connecting ropes arranged vertically and horizontally to form a stirring body array. As the stirring body array is arranged on the surface of a river channel on which silts are easy to deposit, no manual power is used, the stirring body array is prompted to stir the water flow by naturally flowing water flow, so that the silts deposited in the river channel are stirred under the action of the water flow and are washed away by the water flow. The basic fluid mechanics principle is adopted in the stirring bodies, thereby facilitating generation of turbulent flow by the smoothly flowing water flow and removing the silts. As no manual power is used, a large amount of energy sources can be saved. Meanwhile, as the stirring bodies can be made of inexpensive materials and is simply manufactured, the whole device is very low in price.

Description

technical field [0001] The invention relates to a device and method for driving the redistribution of river silt and sediment, which is a hydraulic device and method, and is a method of using natural force to intervene on the silt deposited at the bottom of the river channel, such as for the specified river section below the water surface line Devices and methods for scouring silt and sand, preventing silt silting in specified river sections, accelerating the speed of silt scouring at specified positions inside hydraulic structures, etc. Background technique [0002] As the intensity and scope of human activities continue to increase, active intervention in river topography is required. On the one hand, the problem of silt deposits in rivers has a long history. In the natural state, too much silt in the river will divert the river and interfere with the normal life of human beings. For this reason, humans have tried every means to remove the silt accumulated in the river c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/02
Inventor 龚家国王浩王芳储立民慕星杨贵羽
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES