Comparison and Selection of Sediment Flushing Schemes for Large River Regulation and Storage Tanks
In order to reduce the sediment deposition in the large-scale regulation and storage tank and improve the operation efficiency of the regulation and storage tank,taking the regulation and storage tank project in Dasha River Basin,Nanchuan District,Shenzhen as an example,four sediment flushing schemes are proposed:Vacuum flushing scheme,gate flushing scheme,intelligent ejector scheme and hydraulic tipper flushing scheme.The results show that the vacuum flushing scheme has the lowest operation cost,the simplest and safest maintenance,the best flushing effect and the longest service life,and the project cost is relatively low among the four schemes(Intelligent ejector scheme 13.5 million＞portal flushing scheme 9.1 million＞Vacuum flushing scheme 8.1 million＞hydraulic tipping scheme 6 million).Considering the above comprehensive factors,the vacuum flushing scheme is finally selected as the sediment flushing scheme of the regulating and storage tank.
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