Flood season water storage and sand discharge separation scheduling method for large and medium reservoirs of heavily silt-laden rivers

Abstract

The invention relates to a flood season dispatching method for large and medium reservoirs of heavily silt-carrying rivers, and belongs to the field of water conservancy projects, and the IPC classification number of the flood season dispatching method is E02B 1/00. According to the flood season water storage and sand discharge separation scheduling method for the large-and-medium reservoir of theheavily silt-rich river, a flood season water storage and sand discharge separation system is built in the reservoir, a single reservoir area is divided into a water storage area, a sand discharge area and an adjusting area, and the three areas are communicated through a rubber dam group. Clear water is stored in the water storage area for a long time, and a certain amount of standby water resources can still be stored in the water storage area during rainfall scouring of the sand discharging area; and by utilizing the adjusting area, clean water in the water storage area or the sand discharging area can be conveniently and flexibly called to generate electricity, and damage of coarse sand-containing water flow in the sand discharging area to a power station is prevented. According to thescheduling method, the contradiction between water storage profit making and flood discharge and sand discharge of large and medium-sized reservoirs is solved, and the flood control application of the reservoirs in the flood season is not affected.

Description

Technical field [0001] The invention relates to a flood season scheduling method for a large and medium-sized reservoir on a sand-laden river, in particular to a reservoir scheduling method for solving the problem of insufficient water storage in the subsequent flood period caused by precipitation and sediment discharge during the flood season, belonging to the field of water conservancy engineering, and its IPC classification number is E02B 1 / 00. Background technique [0002] There are a large number of large and medium-sized reservoirs in my country, with a wide range of distribution, and they 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 on sandy rivers have reduced their useful storage capacity and reduced their water storage capacity due to severe sedimentation, resulting in the inefficient use of rain and flood resources. If mechanical dredging technology is used ...

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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