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在淤泥质河口,特别是在其疏浚航槽里,浮泥运动是一种比较普遍的自然现象。在湄南河口、泰晤士河口、卢瓦尔河口、长江河口等都存在此种现象。长江河口的浮泥运动自长江口7m挖槽形成以后才引起有关部门的重视,1977年杭州大学长江口科研组的研究认为,长江口的浮泥主要是汛期上游带来含有大量粘土的细颗粒物质在咸水环境中发生絮凝作用所致。1987年任汝述等对长江口粘性泥沙动力絮凝沉降与浑水流变特性的试验研究,提出了长江口浮泥的流变方程和最小淤积切应力。1976-1977年,上海航道局、华东师范大学等单位对长江口浮泥进行了大量现场调查和
In silt estuaries, especially in its dredging navigation channel, mud movement is a relatively common natural phenomenon. Such phenomena are found in the Chao Phraya, Thames, Loire and Yangtze estuaries. Floating mud movement in the Yangtze River estuary since the formation of the Yangtze River estuary 7m after the formation of the relevant departments to pay attention to the Yangtze River Estuary in Hangzhou University in 1977 research group believes that the Yangtze River estuary is mainly caused by floating mud upstream of the flood season contains a lot of clay particles Material in the saltwater environment caused by flocculation. In 1987 Ren Rushu such as Yangtze River estuary viscous sediment dynamic flocculation and sedimentation of muddy water rheological properties of the experimental study of the Yangtze River Estuary floating mud rheological equation and the minimum deposit shear stress. 1976-1977, Shanghai Waterway Bureau, East China Normal University and other units of the Yangtze River Estuary mud carried out a large number of on-site investigations and