论文部分内容阅读
在雪卡水电站长引水渠道的水力瞬变计算中,应用一维明渠非恒定流方程及其相应的初边界条件,通过数值求解进行电站长引水渠道各种工况运行下的水力设计,并进行了复核计算.重点研究了在机组增、甩负荷时,瞬变运行状况下的非恒定流运动,对工程是否采用溢流侧堰进行了对比计算,得到了电站各种运行工况下渠道瞬态水面线、流速、前池侧堰的溢流过程线等,为合理确定渠道断面尺寸、比降、前池大小、侧堰宽度、堰顶高程及压力钢管进口高程等提供了依据.比设计《规范》提供了更全面、更合理的水力信息,又弥补了水工模型试验模拟长距离输水的缺陷,建议在同类工程中推广使用.
In the calculation of hydraulic transients of the long diversion channel of the Schirmer Hydropower Station, a one-dimensional open channel unsteady flow equation and its corresponding initial boundary conditions are applied to carry out hydraulic design under various operating conditions of the long diversion channel of the hydropower station through numerical solution The paper gives a review of the calculation.The emphasis is on the unsteady flow motion under the transient operating condition when the unit is increased and the load is off and the comparison is made between whether the project uses the weir of the overflow side or not.At the same time, Water surface line, flow rate, the forecourt weir overflow process line, etc., to provide a reasonable basis for determining the size of the cross-section of the channel, the ratio drop, the size of the front pool, the width of the weir, the crest elevation and the inlet elevation of the pressure pipe. “Code” provides a more comprehensive and more reasonable hydraulic information, but also make up for the shortcomings of hydraulic model test simulation of long-distance water delivery, it is recommended to promote the use of similar projects.