1981年,四川省遭受特大洪灾后,引起了各级领导对防洪工作的进一步重视。为此,省政府召开了四川省特大洪灾科学总结会议。在总结的各种教训中,除雨大、水大等自然因素外,主要的一条教训是,四川江河没有进行统一管理,没有建立专门的江河管理机构。因此,沿江两岸在江河滩涂的利用上各自为政,各取所需,随意侵占河床(滩)的“三乱”(即乱占、乱建、乱倒)现象相当严重。挤占了洪水排泄通道,严重影响了河道的安全行洪,加重了洪灾损失。通过 After the special floods in Sichuan Province in 1981, it caused further attention to flood control work by leaders at all levels. To this end, the provincial government convened a flood of science conference in Sichuan Province. Among the various lessons learned, apart from natural factors such as rain and water, one of the major lessons is that there is no unified management of rivers and lakes in Sichuan, and no special river management agency has been established. Therefore, the utilization of rivers and lakes on both sides of the Yangtze River has its own way, and the “three chaos” (ie indiscriminate occupation, indiscriminate construction and indiscriminate chaos) that are indiscriminately occupied and indiscriminate in occupying the riverbed (beach) is rather serious. Crowded flood discharge channel, seriously affected the safety of flood discharge, increasing the flood damage. by