水库放水洞闸门开度出流影响因素研究  

Research on Infl uencing Factor of Gate Opening Outfl ow of Reservoir Discharge Tunnel

作　　者：李响 LI Xiang(Shachang Reservoir Management Offi ce in Miyun District,Beijing City,Beijing 101500,China)

机构地区：[1]北京市密云区沙厂水库管理处,北京101500

出　　处：《工程技术研究》2024年第15期41-43,共3页Engineering and Technological Research

摘　　要：文章针对某水库放水洞,重点评估了自由孔流流量系数的时效性及上游水位对出流的影响。通过分析最近11年的144次测流数据,发现127次测流数据的系统误差小于5%,占比为88.2%,验证了原率定成果的有效性。研究表明,闸门开度的增加会导致出流量增加,但增幅逐渐减小。智能闸门控制仪输入的预想开度与实际开度存在差异,特别在小流量条件下,会影响流量的精确控制。The chronergy of the flow coefficient of free orifi ce flow and the infl uence of upstream water level on outflow are evaluated for a reservoir discharge tunnel.By analyzing 144 flow measurement data in recent 11 years,it is found that the systematic error of 127 flow measurement data is less than 5%,accounting for 88.2%,which verifi es the effectiveness of the original calibration results.The research shows that the increase of gate opening will lead to the increase of outlet flow,but the increase amplitude will gradually decrease.There is a difference between the expected opening input by the intelligent gate controller and the actual opening,which will aff ect the accurate control of the flow,especially under the condition of small flow.

关 键 词：水库放水洞 闸门开度 流量系数 上游水位 流量控制 

分 类 号：TV663[水利工程—水利水电工程]