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为了科学治理非硬化路面水土流失,采用野外放水冲刷试验,对非硬化路面侵蚀产沙规律进行了试验研究。结果表明,同一坡度不同放水流量与同一放水流量不同坡度条件下,非硬化路面产沙随时间的变化形式均有3种,分别为平缓型、多峰型和单峰型。对同一路面不同观测断面的产沙量分析发现,产沙量沿坡面的空间变化形式分别为波动式减小、逐渐式减小和先增大后减小。、得出平均含沙量与放水流量呈对数相关,产沙率与放水流量、平均含沙量与坡度、产沙率与坡度均呈直线相关。以期为非硬化路面的水土流失预测和治理提供科学依据。
In order to scientifically manage soil erosion of non-hardened pavement, a field water scouring test was conducted to study the law of erosion and sediment yield on non-hardened pavement. The results show that there are three kinds of seasonal changes of sediment yield over time for different slopes with the same flow rate and the same discharge rate, which are flat, multi-peak and unimodal. The analysis of sediment yield of different observation sections on the same road surface shows that the spatial variation of sediment yield along the slope surface decreases, decreases gradually and then increases first and then decreases. , It is concluded that the average sediment concentration is related logarithmically to the discharge water flow rate. The sediment yield is linearly related to discharge flux, average sediment concentration and slope, sediment yield and slope. With a view to provide a scientific basis for the prediction and treatment of soil and water loss on non-hardened pavement.