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作为张掖市甘州区与临泽县之间的黑河干流的控制断面,高崖断面径流量变化反映了甘州区地表水、地下水、灌溉用水之间的转化特征。在定性分析黑河干流高崖断面径流组成的基础上,提出了河道渗漏和地下水溢出的简化模型,利用月引水比例刻画灌溉引水量的年内变化,以莺落峡径流量和典型观测孔水位为输入,对高崖断面的月径流量进行了模拟。模型重建的1989—2006年高崖断面月径流量NSE(Nash-Sutcliffe coefficient of efficiency)系数达到0.88。所提出的方法充分考虑了河道水量适时变化条件下的河道渗漏行为以及人类活动的影响,是对高崖断面径流变化研究的一次积极探索。
As the control section of the Heihe Mainstream between Ganzhou District and Linze County in Zhangye City, the change of runoff at Gaoya section reflects the transformation characteristics of surface water, groundwater and irrigation water in Ganzhou District. On the basis of qualitative analysis of the runoff composition of the high reaches of the mainstream of the Heihe River, a simplified model of river seepage and groundwater overflow was proposed. The monthly diversion ratio was used to characterize the annual variation of water diversion. Taking the runoff at Yingluo Canyon and the water level of the typical observation hole as The monthly runoff of the high cliff section was simulated. The Nash-Sutcliffe coefficient of efficiency (NSE) coefficient of the model reconstructed 1989 to 2006 reaches 0.88. The proposed method fully considers the river leakage and the influence of human activities under the timely change of river water volume, and is an active exploration on the runoff change of the high-cliff section.