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Suspended river management system and method

A technology of hanging rivers and river courses, which is applied in the field of hanging river governance systems, which can solve the problems of increasing the risk of crevasses, prone to cross rivers, inclined rivers, and changes in river regimes, so as to maintain the health of river courses, improve the regional ecological environment, and regulate The effect of river regime

Active Publication Date: 2018-01-23
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The so-called "secondary suspended river" refers to the channel shape of "the trough is higher than the beach, and the beach is higher than the ground of the back river". river, increasing the risk of breaching

Method used

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  • Suspended river management system and method
  • Suspended river management system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Present embodiment is a kind of method of hanging river governance, and the condition that described method uses is:

[0025] For rivers with a large amount of sediment, the local annual precipitation is concentrated in the rainy season, which can provide relatively sufficient rainfall. The upper or middle reaches of the river have geographical conditions for setting up water intake structures or flood diversion projects and diversion channels, and flood detention can be found in the middle reaches The flood detention area is either set in the desert in the middle reaches or in the low-lying permeable or impermeable soil zone, and the downstream is the suspended river channel that has formed or is forming.

[0026] In some rivers, due to soil erosion in the middle reaches, a large amount of sediment is carried in the water. These sediments will settle down in the middle and lower reaches where the water flow is slow, causing the bottom of the river to rise. Hanging Rive...

Embodiment 2

[0035] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment regarding the control flow for ensuring safe flushing. The control flow to ensure safe flushing described in this embodiment satisfies the following conditions:

[0036] Q ' 控 + Q ' 侧 Q 安

[0037] In order to effectively reduce the bottom elevation of the suspended river, it is necessary to maximize the sand-laden scour capacity of the river flow while ensuring the safety of the embankment. The safe flow of the river means that the water flow of the river cannot dig out the embankment and endanger the safety of the embankment during the flood discharge period. Q 安 The calculation of is related to river topography and flow conditions. Under the straight condition of the river, the mainstream of the river swings less, and the safe flow is relatively larger. As the curvature of the river becomes larger, the mainstream of the river is likely to directly scour the em...

Embodiment 3

[0040] This embodiment is a hanging river governance system that implements the method described in Embodiment 2, including: a dam 1 that can discharge floods during the flood season and is installed in the upstream channel, and one or both sides of the upstream bank of the dam are equipped with The upstream diversion channel 3 of the water diversion regulating gate 2, the upstream diversion channel is connected with the flood detention area 4 in the midstream desertification zone, and the described flood detention area is connected with the downstream diversion channel 6 provided with the sand flushing regulating gate 5, and the downstream The diversion canal is connected with the river channel 7 of the hanging river section; the information connection between the described water diversion regulating gate, the flushing regulating gate and the hydrological station 8 is as follows: figure 1 shown.

[0041] The entire Xuanhe governance system is mainly divided into five parts, a...

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Abstract

The invention relates to a suspended river management system and method. The suspended river management system comprises a dam arranged in an upstream river way and capable of releasing flood during aflood season; an upstream diversion canal provided with a diversion adjusting gate is arranged on the upstream position of the dam, and the upstream diversion canal is connected with a flood retarding basin of a midstream desertification zone; the flood retarding basin is connected with a downstream diversion canal provided with a sand flushing adjusting gate, and the downstream diversion canal is connected with a river way of a suspended river section; and the diversion adjusting gate and the sand flushing adjusting gate are connected with a hydrological station. According to the suspended river management system and method, the rolling dam is arranged at the upstream position for diversion, and a reservoir for containing flood in the flood season is arranged in a midstream desert; and after being subjected to silt deposition in the reservoir, a water flow is led into a downstream river way to flush the downstream river way, thus a downstream riverbed is lowered, the problem of riverbed continuous deposition and heightening is solved, a secondary suspended river is avoided, and the effects that hydro-junction systems of middle and lower reaches are protected, and the service lives of the reservoir and power generating equipment are prolonged are achieved.

Description

technical field [0001] The invention relates to a system and method for harnessing a suspended river, which is a system and method for environmental protection and governance, and a system and method for transforming desertified areas and cleaning river courses. Background technique [0002] In some arid areas with serious water erosion and wind erosion, there is serious water and soil erosion, and the development of gullies / rivers in the area is strong, and the upper reaches often have a large gradient, and the flow energy of the water is large, which can carry a large amount of sediment. At the same time, due to the intensification of human activities, the water resources that were originally in short supply are even more scarce. Due to the lack of vegetation in such areas, desertification is often accompanied, and even deserts are formed, which makes soil erosion more serious and causes a vicious circle. On the one hand, this deteriorates the local ecological environment...

Claims

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Application Information

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IPC IPC(8): E02B3/00E02B3/02E02B3/10E02B1/00E02B8/04
CPCY02A10/30
Inventor 龚家国王浩赵勇孟庆东尚毅梓冶运涛牛晨王英
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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