一、河道清淤的施工顺序要按照自上游到下游的顺序进行。 First, the construction sequence of dredging should be in accordance with the order from upstream to downstream. 

二、河道清淤在施工前要准备好卷扬机、立式泥浆泵、泥浆泵浮筒、高压水泵、水龙带等设备，方便将抽出的淤泥及时处理，以免对周边环境造成不必要的影响。 Two. Before construction, the dredging machine, vertical mud pump, mud pump buoy, high pressure water pump, water dragon belt and other equipments should be prepared before the construction. It is convenient to treat the extracted silt in time so as to avoid unnecessary influence on the surrounding environment.