城市骨干河道湿式清淤实践与探索OA

In recent years,some urban rivers have been severely affected by the problem of silt at the bottom of the river,resulting in black and odorous water bodies and deteriorating water quality,which has had a serious impact on the living environment of residents.Compared with the commonly used dry dredging method and hydraulic dredging method for small rivers,the dredging of urban backbone rivers is more complex.It is imperative to explore new dredging methods that can ensure continuous flow,avoid cofferdam construction,maintain navigation without interruption,and handle a large amount of silt.For the first time in the main urban area of Nanjing,a wet dredging scheme was adopted for the dredging of the Yunliang River.Through the calculation of the feasibility and engineering quantity of the scheme,the results showed that compared with the traditional dry dredging,the wet dredging scheme is an effective solution for ecological governance of the water quality problems of the Yunliang River in Nanjing.It has the advantages of good dredging effect,low construction noise,and low secondary pollution.