人民长江
人民長江
인민장강
YANGTZE RIVER
2002年
z1期
46-49
,共4页
唐从胜%宋世杰%王维国%HU Chun-ping
唐從勝%宋世傑%王維國%HU Chun-ping
당종성%송세걸%왕유국%HU Chun-ping
downstream river channel%monitoring and analysis%river regime evolution%scour-sediment computation%variation of water surface%Gezhouba hydroproject
Gezhouba hydroproject was impounded and put into operation in 1981. In order to analyse the impact on the downstream river course, Jingjiang Hydrologic and Water Resources Survey Bureau of Changjiang Water Resources Commission has conducted prototype observation on the Yichang-Chenglingji river stretch. On basis of the observed data, the change in river regime and scour-sedimentation evolution and water surface profile below the dam are analysed systematically. The results show that the scouring of downstream river course mainly stretches from Yichang to Ouchikou, mainly occurring in 1980～1987; the scourring mainly takes place in the river channel and the water surface profile drops significantly in dry season,but not quite in high flood season.
