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黄河口改道清水沟流路后,改道点西河口以下在漫流淤积的基础上淤滩成槽,之后遇有利的水沙条件,河道发生明显溯源冲刷。1984年后,随着入海口门向外延伸,转为溯源淤积,由于连续枯水枯沙,溯源淤积发展缓慢,以沿程淤积为主。1996年实施清8人工改汊和1998年实施挖河固堤试验工程后,再次发生溯源冲刷。清水沟行河23年来,溯源淤积影响范围及程度均小于溯源冲刷,目前河道形态较好,流路仍有较大的行河潜力。
After passing through the Qingshuigou channel of the Yellow River estuary diversion channel, silt strata formed on the basis of diffuse siltation below the west channel of the diversion point. After favorable water and sediment conditions were encountered, obvious riverbed erosion occurred. After 1984, as the gate to the sea extends outward, it turns to traceability and sedimentation. Due to the continuous dry runoff and sedimentation, the traceability and sedimentation are developing slowly, with siltation mainly occurring along the route. After the implementation of the Qing 8 manual reform in 1996 and the dredging embankment construction project in 1998, a trace of source erosion occurred again. In the past 23 years since the Qingshuitai River was run, the scope and extent of the traceability and siltation have been less than that of the source erosion. At present, the shape of the river is better and there is still a great potential for the river.