【摘要】 本文根据长江、黄河、淮河、海河及辽河等五大流域的资料，对我国江河湖库的泥沙淤积及清淤疏浚情况进行了总结，认为在目前泥沙淤积严重、防洪形势严峻的情况下，必须采取拦、排、放、挖等综合措施才能取得较好的效果。在分析我国清淤疏浚队伍及疏浚实践的基础上，提出了江河湖库清淤疏浚的基本原则。更多还原

【Abstract】 In this paper, sediment deposits and dredging practice in rivers,lakes and reservoirs are summarized by the data from the Yangtze River, the Yellow River, the Huaihe River, the Haihe River and the Liaohe River. In China, the sediment accumulation is so serious, and the situation of control flood is so austere that comprehensive measures of channel regulation including dredging must be adopted in these rivers. Some basic principles about dredging are also put forward.更多还原