Study on dredging schemes of Bajiazui reservoir in the Loess Plateau
The sediment concentration of water flow in the Loess Plateau is high. During the reservoir op-eration,the sediment from upstream tributaries and watersheds continuously flows into the reservoir. As the operating year of reservoir increases,the sediment accumulation gradually increases,which affects the storage capacity of reservoir. It is necessary to carry out reservoir dredging to restore the reservoir ca-pacity and ensure the normal performance of reservoir benefits. Taking Bajiazui reservoir in the Loess Plateau as an example,the sediment inflow in recent years is investigated and analyzed,and it is found that the reservoir area is severely silted and requires dredging. Therefore,based on various influencing factors such as the surrounding environment of reservoir,urban protection requirements,construction conditions,construction period and dredging costs,three dredging schemes are formulated,and compre-hensive comparison and analysis are conducted to select the optimal dredging scheme in terms of con-struction period and economy.