河流极枯流量条件下提高水文测验精度的方法  

The Method of Improving Accuracy of Hydrological Test under Extremely Low Flow Condition of the River

作　　者：罗昌军 聂霁 

机构地区：[1]长江水利委员会长江上游水文水资源勘测局,重庆

出　　处：《水资源研究》2023年第3期267-272,共6页Journal of Water Resources Research

摘　　要：由于渠江富流滩电站检修需要关闭电站闸门,导致渠江河流流量急剧减小,常规流速仪测量方法已无法满足流量测验精度要求,为了搜集准确可靠的极枯流量测验成果,我们采用缆道加走航式ADCP配合GNSS的方法施测极枯流量,用水文站大断面成果进行ADCP施测面积的改算,测验效果很好,精度可靠,有效解决了常规流速仪无法施测极枯流量的问题,满足了获取最小下泄流量的河流生态需求。Due to the need to close the gate of the Qujiang Fuliutian Power Station for maintenance, the flow rate of the Qujiang River has sharply reduced. Conventional hydromectric propeller is unable to meet the accuracy requirements of flow testing. In order to collect accurate and reliable results of extremely low flow testing, we measure the extremely low flow with cable and navigation ADCP combined with GNSS, and we calculate the measurement area of ADCP with the hydrological station’s large cross-section results, which has good effect and reliable accuracy, and effectively solves the problem that conventional hydromectric propeller flow cannot measure extremely low flow rates, and meets the ecological demand of rivers to obtain the minimum discharge flow rate.

关 键 词：ADCP GNSS 极枯流量 流量测验 

分 类 号：P33[天文地球—水文科学]