【作者】 杨开林； 石维新；

【Author】 Yang Kailin;Shi Weixin;China Institute of Water Resources and Hydropower Research;Beijing Instilule of Plaming & Design Research for Water Resources;

【机构】 中国水利水电科学研究院水力学所； 北京水利规划设计研究院；

【摘要】 通过研究南水北调中线工程北京段泵站前池可调节容积参数的设计,提出了从实际运行调节入手,通过详细的水力瞬变计算分析问题的方法及其数学模型。研究表明:①泵站上游明渠可以视为前池的延伸,在设计前池可调节容积参数时必须考虑上游明渠的调蓄能力;②为了启泵,上游应当先增加相应的流量,当前池水位开始上升到预设水位后才开始启泵;③正常停泵的程序是,首先减少泵站上游明渠的流量,然后当前池水位开始下降到预设最低水位后才开始停泵。通过计算分析,得到了所研究系统前池可调节容积的合理参数,成果已被工程设计采用。更多还原

【Abstract】 The design of the parameters of the forebay at the pumping station in Beijing Section in Middle Route of South-to-North Water Transfer,such as the plane area,maximum and minimum water stages,is investigated by simulation of unsteady state flows in open channel in details.The open channels on the upstream of the forebay may be regarded as the forebay extension.To minimize the forebay sizes,the volumetric discharge of the upstream open cannels should be firstly increased before the pumps are regularly started up,and the volumetric discharge of the upstream open cannels should be firstly decreased before the pumps are regularly closed.At present the parameters of the forebay obtained herein have been used in the design of the project.更多还原