长江是我国最大河流,也是水运网大动脉,全国最大的上海港便位于长江口内,它在我国四化建设和对外贸易中起着极其重要作用,随着上海宝山钢铁总厂的兴建,对长江口入海通航水深的要求也将提高,因此研究长江底质分布和浮泥特性,以便为深水航槽的选择,疏浚和维护,提供沉积方面的科学依据. The Yangtze River, the largest river in our country, is also the main artery of the water transport network. The largest Shanghai port in the country is located in the mouth of the Yangtze River. It plays an extremely important role in the four modernizations and foreign trade of our country. With the construction of Shanghai Baoshan Iron and Steel Plant, Therefore, the requirements for the depth of navigation into the sea will also increase. Therefore, the sediment distribution and the characteristics of the floating mud in the Yangtze River should be studied in order to provide a scientific basis for the sediment selection, dredging and maintenance of the deep-water navigation channel.