南水北调中线工程跨河建筑物堰子河倒虹吸工程模型试验研究  

Model Test on Inverted Siphon Project of Yanzihe River in the Middle Route Project of South-to-North Water Transfer

作　　者：沈之平[1] 刘桂生[1] 吕丽君[1] 

机构地区：[1]长江科学院河流研究所,武汉430010

出　　处：《南水北调与水利科技》2008年第3期19-21,31,共4页South-to-North Water Transfers and Water Science & Technology

摘　　要：南水北调中线工程总干渠跨河建筑物规模较大,此类水工建筑物对原有河流输水输沙的影响是一个普遍的问题。通过对跨河建筑物中的堰子河倒虹吸工程河工模型试验研究,表明工程兴建后,倒虹吸工程上游水位壅高,流速沿横向分布更均匀,工程上下游的流态与倒虹吸工程布置有关,各级流量下的泥沙均能顺利通过倒虹吸管输送到下游,不会产生明显淤积或堵塞现象,可满足设计要求。There will be many across-canal structures along the general canal of the Middle Route Project of Water Transfer from South-to-North, and it is a common problem that such hydraulic structure will have an influence on the water and sediment transfer of the river. The experimental research on the Yanzihe River Inverted Siphon Project has been done. The results show that when the project were finished its upstream water level would rise up, the distributing velocity of flow along cross section become more uniform, the flow condition upstream and downstream of the project be related to its layout, and sediment under all levels of flow capacities could be transferred to the downstream successfully without filling up and building up, which can meet the requirements of the design.

关 键 词：南水北调中线工程 倒虹吸 水位 流速 管道输沙能力 

分 类 号：TV131.6[水利工程—水力学及河流动力学] TV68