Flood season water storage and sediment discharging separating system for large and medium-sized reservoirs of sediment-laden rivers

Abstract

The invention belongs to the field of hydraulic engineering, and relates to a large and medium-sized reservoir of a sediment-laden river, in particular to a reservoir, wherein the reservoir is used for solving the problem of insufficient later flood season water storage caused by precipitation and sediment discharge in the flood season, and the IPC classification numbers of the reservoir is E02B 1 / 00 and E02B 3 / 02. By building a blood season water storage and sediment discharging separating system in the reservoir, a single reservoir area is separated into a water storage area, a sediment discharging area and an adjusting area which communicate through a rubber dam group; the water storage area stores clear water for a long time, and during precipitation scouring of the sediment discharging area, it can be ensured that the water storage area still stores a certain quantity of standby water resources; and through the adjusting area, the clear water of the water storage area or the sediment discharging area can be diverted conveniently and flexibly for power generation, and damage caused by a coarse-sediment-containing water flow of the sediment discharging area to a power station isprevented. According to the blood season water storage and sediment discharging separating system, the contradiction between water storage benefiting and flood discharge for sediment discharge of thelarge and medium-sized reservoir is resolved, and overall flood prevention application to the flood season of the reservoir is not influenced.

Description

technical field [0001] The invention relates to a large and medium-sized reservoir for a sandy river, in particular to a reservoir for solving the problem of insufficient water storage in the subsequent flood season caused by precipitation and sediment discharge in the flood season, belonging to the field of water conservancy engineering, and its IPC classification number is E02B 1 / 00, E02B 3 / 02. Background technique [0002] There are a large number of large and medium-sized reservoirs in my country, which are widely distributed and play a huge role in power generation, irrigation, water supply and flood control. However, with the passage of time, many large and medium-sized reservoirs in sandy rivers have reduced their storage capacity due to severe sedimentation, and their water storage capacity has weakened, resulting in the ineffective use of rainwater resources. If mechanical desilting technology is used to discharge all the silt deposited in the reservoir, not only ...

AI Technical Summary

Problems solved by technology

The operation of lowering the water level during the flood season is beneficial to the sediment discharge of the reservoir, but it affects the water storage in the reservoir area during the flood season, which in turn affects the function of the reservoir, thus inducing the contradiction between the flood discharge and sediment discharge of large and medium-sized reservoirs and the water storage in the reservoir area.

At the same time, since a large amount of coarse-grained sediment is often deposited near the water inlet of the power station, when water is diverted for power generation, this part of the deposited sediment enters the hydropower station, causing serious abrasion to the turbine.

At present, there is no precedent for large and medium-sized reservoirs of sandy rivers to store clean water for a long time in the reservoir area in front of the dam, adjust the water diversion of the power station in the regulation area, and restore the storage capacity by precipitation and sand discharge in the sand discharge area.

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