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为测试电解质示踪正态模型在降雨条件下测量坡面径流流速的可行性,对3个降雨强度和5个坡度条件下坡面电解质示踪试验数据进行分析;在降雨条件下将正态模型法计算的径流流速与传统流量法得到的流速进行对比。结果表明:正态模型测量坡面径流流速在理论上是可行的;坡度和降雨强度较小时,正态模型法能够在短距离内准确测量径流流速,与流量法测量结果接近;随着坡度和降雨强度的增大,由于电解质的横向扩散损失导致模型预测径流流速的精度有所降低。
In order to test the feasibility of measuring the runoff velocity of runoff on rainfall in the normal model of electrolyte tracer, the experimental data of slope electrolyte tracing under three rainfall intensities and five slope conditions were analyzed. Under normal rainfall conditions, The calculated runoff velocity is compared with that obtained by the traditional flow method. The results show that it is theoretically feasible to measure the runoff velocity of the slope by the normal model. When the slope and rainfall intensity are small, the normal model method can accurately measure the velocity of the runoff within a short distance, which is close to the measurement result of the flow rate method. As the rainfall intensity increases, the accuracy of the model in predicting runoff velocity decreases due to the lateral diffusion loss of the electrolyte.