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河流、海洋水体中挟带的细颗粒泥沙,在到达水流流速较缓的航道、港池等处,逐渐被沉积凝聚于海底形成了浮泥层,随着静置时间的延长,单位体积内的含水量减少而逐渐固实,成为团结物海底的组成部分。浮泥层中物质密度和海水是不同的,当利用回声测深仪进行深度探测时,被误认为海底显示于记录器上。浮泥层对于船舶通航条件来说,与固结物质构成的海底是不同的,因为它处于半流动状态,一般来说,它不影响船舶的通航,在海底声学中将此称为“液态海底”。
Fine sand and sediment entrained in rivers and oceans are gradually accumulated in the seafloor to form a floating muddy layer when they reach the waterway and port pond where the flow velocity is relatively slow. With the prolongation of standing time, The water content decreases and gradually solidified, becoming a component of the seabed. The density of the material in the mud layer is different from that of the seawater. When the depth of sounding is measured using an echo sounder, it is mistaken for the seabed to be displayed on the logger. Floating layer is not the same as seafloor consisting of consolidated material for navigable conditions because it is in a semi-fluid state and in general it does not affect the navigation of the ship and is called “liquid” in submarine acoustics seabed".