一、工程概况我市县管以上骨干河道共有296条(段),总长2989.51公里。其中列入等级航道的河道有225条,长2100.2公里。长期来由于水流影响,尤其是六十年代后水运事业的发展,往来船只日益增多,受船行波的冲刷,河岸坍塌日趋严重。仅据225条航道调查,每年坍损的土地就有600多亩。坍损土地还带来坍毁房屋、桥梁、公路等,严重影响群众的生产和生活。因此,当时曾发生农民用砖头、士块投掷行船的情况,人民群众来信和人大代表提案反映这方面意见的也很多。为此,1982年由市水利、交运部门进行联合调 First, the general situation of the project City, the backbone of the river above the county a total of 296 (paragraph), a total length of 2989.51 km. Among them, there are 225 rivers in the grade channel, which is 2100.2 km long. In the long run, due to the influence of water flow, especially the development of water transport business after the 1960s, the number of vessels coming and going is increasing day by day. Due to the erosion of shipwreck waves, the riverbank collapse has become increasingly serious. According to the investigation of 225 waterways alone, 600 mu of land is collapsed each year. Collapse of the land also brought destruction of houses, bridges, roads, etc., seriously affecting the production and life of the masses. Therefore, when peasants used bricks and tractors to throw their ships at sea at that time, the people’s letter and the NPC deputies’ proposals reflected many opinions in this regard. To this end, in 1982 by the city water conservancy, delivery departments for joint adjustment