王甫洲水利枢纽兴建对近坝河段的综合影响  

Comprehensive impact of Wangfuzhou Project on neardam river stretch

作　　者：廖志丹 陈子湘[1,2] 何广水[1,2] 

机构地区：[1]长江委办公室 [2]长江科学院

出　　处：《人民长江》1997年第12期37-39,共3页Yangtze River

摘　　要：结合规划、勘测和水工模型试验等资料的分析对王甫洲河段的近期演变趋势及枢纽建成后对可能带来的影响进行了初步分析，同时对不同流量条件下河道右汊泄水闸和左汊电厂下游附近的水位改变值进行了极限冲刷状态下的略估，结果表明，经过三十多年丹江口水库的调节，黄家港至茨河河段河势调整已基本完成，河道处于相对平衡状态。枢纽建成后，泄水闸护坦左侧及船闸下口门附近贴流区受弯道环流影响，将受到不同程度冲刷，应对此区域内的水工建筑物加强维护。王甫洲河段河床粗化过程已基本结束，在枢纽建成运行后，流量小于４６００ｍ３／ｓ时，下游水位降低约在０．２ｍ以内，当流量大于４６００ｍ３／ｓ时，水位下降不甚明显。The recent evolutional trend of the Wangfuzhou reach of Hanjiang River and the possible impact of the Wangfuzhou project on the reach are preliminarily analysed in combination with achievements from planning, investigation and hydraulic model tests. Changes in downstream water levels near the releasing sluice on the right branch of the Hanjiang River and near the powerhouse on the left branch of the river are roughly estimated with various discharges under the limit state of scouring. Results show that after more than 30 years of regulation by Danjiangkou reservoir, the river regime regulation of reach between Huangjia Port and Cihe River has been completed, and the river channel is in a relative balanced state. After the Wangfuzhou porject being completed, the left zone of the sluice apron and the zone near the downstream exit of shiplock will be scoured to some extent due to influence of the circulation flow in bend channel, so the hydraulic structures in those zones should be carefully protected and maintained. The roughening process of the river bed of Wangfuzhou reach has been finished on the whole. When the project operates with discharges less than 4 600 m 3/s, the water level drop dawnstream from project will not greater than 0.2 m compared with the condition without the project, and it is not apparent with the discharges greater than 4 600 m 3/s.

关 键 词：水利工程 环境影响 河道演变 王甫洲工程 

分 类 号：TV143[水利工程—水力学及河流动力学] TU697.25[建筑科学—建筑技术科学]