【摘要】 通过南水北调中线工程淇河渠道倒虹吸模型试验 ,对低水头大流量倒虹吸工程总体布置中的几个问题进行了研究 ,结果表明 :控制闸宜设在上游 ,流态稳定 ,水流条件好 ;倒虹吸管进口不需要设置通气孔 ,也没必要使倒虹吸进口顶缘低于倒虹吸管通过最小流量时进水口前的水位。该项研究成果在南水北调中线工程和平原地区低水头大流量倒虹吸管的设计与运用中有一定的推广价值。更多还原

【Abstract】 Several issues in overall distribution of inverted siphon projects with low head and large discharge are studied through the inverted siphon experiment in the Qi River channel of the middle line project of water diversion from the Yangtze River into the Yellow River. The results demonstrate that control gate should be constructed in the upper reach where is of stable water flow and suitable flow conditions; it is not necessary to set air hole at the inverted siphon tube mouth and also no need to have the top of the tube entrance lower than the water level of the minimum for the tube. The research achievement has certain value for extension in design and practice of inverted siphon tube with low head and large discharge in plain areas and in the middle line project of water diversion from the Yangtze River into the Yellow River.更多还原