CAJ | 학술논문

统计了青铜峡水库汛期排沙和汛末拉沙期间下游各河段的淤积状况，通过建立水库下游河道排沙比与进入河道的水沙条件的定量关系，分析有无青铜峡水库时相应时期水库下游河道的冲淤状况。结果表明：由于水库汛期排沙对水沙条件的改变是有限的，因此水库汛期运用未对其下游河道造成增淤；汛末拉沙对下游河道造成了增淤，该期间若不排沙，则同期下游河段将发生微冲。
통계료청동협수고신기배사화신말랍사기간하유각하단적어적상황，통과건립수고하유하도배사비여진입하도적수사조건적정량관계，분석유무청동협수고시상응시기수고하유하도적충어상황。결과표명：유우수고신기배사대수사조건적개변시유한적，인차수고신기운용미대기하유하도조성증어；신말랍사대하유하도조성료증어，해기간약불배사，칙동기하유하단장발생미충。
This study counted the deposition condition of each section downstream Qingtongxia Reservoir during desilting in flood season and scouring in the end of flood season of the reservoir and analyzed and calculated the channel scour and fill conditions of the lower sections of the reservoir in cor-responding period under the conditions of without the reservoir through establishing quantitative relationship of sediment delivery rate of the channel downstream the reservoir and silt-discharge conditions of incoming into the channel. The outcomes show that becouse the change of the reservoir sedi-ment to the incoming water and sediment condition is limited,so the reservoir operation does not cause increasing deposition in the downstream chan-nel;but the deposits flushing by drawdown does,so if there is no sediment discharge in the period,there will be slight scouring in the reach.