【摘要】 为保证南水北调东线济南市区段输水工程的安全运行,选取输水工程中比较典型的水工建筑物制作了局部水工模型,主要包括输水暗渠出小清河涵闸、2+700处变断面、历山北路下卧段、TP28及TP51转弯段、暗涵出口等部分。结果表明:各工况条件下,整个暗涵输水段的水流都处于缓流状态,水流平稳没有掺气现象,过流能力满足要求;模型试验中得到的输水暗涵段的局部水头损失较均匀流计算值要小,证明设计采用均匀流计算的方法是合理可行的;济南市区段输水暗涵的整体过流能力可基本满足加大流量过流的要求。更多还原

【Abstract】 In order to ensure safe operation of water conveyance project of Jinan urban section of Eastern Route of South-North Water Diversion,local hydraulic model was made by selecting the typical hydraulic structures of the water conveyance project,which mainly included the water conveyance buried culverts out of Xiaoqing River sluice gate,2 + 700 variable section,inverted siphon of Lishanbeilu,TP28 and TP51 turn section,buried culvert outlet and so on.The test results showed that under the different working conditions,the flow of the whole buried culvert belonged to subcritical flow,the flow was steady without aeration phenomenon,and the flow capacity could meet the requirements.The local head loss in the water conveyance buried culvert section derived from the test was smaller than the calculation value of the slow flow,which proved that the calculation method of in the design was reasonable and feasible.The flow capacity of the whole buried culvert in Jinan urban section could meet the basic requirements of large flow.更多还原