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沟道流速是研究小流域土壤侵蚀机理与水土流失规律的重要水动力学参数之一。在室内小流域模型人工降雨土壤侵蚀过程模拟试验中,采用黄河水利科学研究院研发的MVC3000SAC-GE12型流速仪和示踪粒子自动量测沟道流速,并对数据进行处理分析,结果表明:流速仪自动量测的沟道流速平均相对误差仅为5.73%,说明在小流域模型人工降雨模拟试验中沟道流速自动量测是可行的。
Channel velocity is one of the most important hydrodynamic parameters for studying the mechanism of soil erosion and the law of soil and water loss in small watershed. In the simulation experiment of artificial rainfall soil erosion process in indoor small watershed, MVC3000SAC-GE12 flowmeter and tracer particle developed by Yellow River Hydraulic Research Institute were used to measure the channel velocity automatically, and the data were processed and analyzed. The results showed that the flow rate The average relative error of channel velocity measured by the instrument is only 5.73%, which shows that it is feasible to measure the channel velocity automatically in the simulation experiment of artificial rainfall in the small watershed model.