A kind of sand regulating and dredging method for river control

Abstract

The invention relates to a sand regulating and dredging method for river control. Its technical plan is: dig a river channel horizontally on the inner channel of the river dam, use the upstream side of the river channel as the river inlet channel, and set up a sand regulating area and a river sand retaining area. The downstream side of the river is the river outlet culvert; a crescent sand retainer is provided on one side of the sand control area and the river sand retaining area, and sand transport winch cages are respectively installed on both sides of the river channel. A pressure sensor is provided in the groove at the bottom of the sand adjustment area at the bottom of the cage, and a fine sand settler is provided at the river outlet culvert. The beneficial effects are: the present invention considers the ecological problems of the river, if it does not affect the migration of fish, at the same time, the filter gap in the sand blocking area of ​​the river is relatively large, and it will not cause damage to the ecological system of the river; moreover, the fine sand can be collected and used , the economic benefits are greatly improved, and the management of the river is greatly facilitated. At the same time, due to the timely control of sandstorms, the service life of the river is greatly extended.

Description

technical field [0001] The invention relates to a sand regulating and dredging system for water conservancy projects, in particular to a sand regulating and dredging method for river harnessing. Background technique [0002] Rivers are the dependence of people's lives, and while rivers bring benefits to people, they often cause great harm to humans. The biggest cause of harm is the sand in the upper reaches. If the problem of sand can be solved, it will be solved fundamentally. hazards of rivers. The water and sediment regulation is to use engineering facilities and some dispatching means to wash away the sediment of the river and the silt of the river bed in a timely manner through the impact of the water flow, thereby reducing the siltation of the river bed. The specific operation is to use the density flow to form a continuous stream. The silt at the bottom of the river is scoured, and the silted sand is also disturbed by the turbulent incoming water. At this time, the h...

AI Technical Summary

Problems solved by technology

The water and sediment regulation is to use engineering facilities and some dispatching means to wash away the sediment of the river and the silt of the river bed in a timely manner through the impact of the water flow, thereby reducing the siltation of the river bed. The specific operation is to use the density flow to form a continuous stream. The silt at the bottom of the river is scoured, and the silted sand is also disturbed by the turbulent incoming water. At this time, the high-speed jet of the sand washing boat is used to simultaneously disturb the sand; finally, the river water and the silt are discharged at the same time. , however, the existing problem is: although it can solve the silt problem in some river sections, it is still sent to the downstream channel, and the sand is not transferred out, so the problem still exists in the downstream channel, especially the Yellow River, which contains The amount of sand is higher, and there is even a problem with the downstream above-ground river, which brings higher requirements for flood control. Moreover, through scouring and silting, it also needs conditional river courses to be realized. Not every section of the river can be realized, such as the upstream has a dam, or has multiple rivers

It still has the above-mentioned problems, and it cannot achieve regular transfer of sediment from the river for dredging, and cannot fundamentally solve the problem of river sediment

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