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坡面流 [pō miàn liú]
[水文] overland flow
- 通过泥沙运动力学分析了在坡面流作用下土颗粒的受力情况，建立了临界坡度的计算公式。
By means of mechanics of sediment transport, forces acting on soil grain are analyzed under the slope surface flow and calculation formula of critical gradient is set up. - 发生坡面流的斜坡残 坡积土主要为粘性土，含少量块石或碎石，级配较好，且土层厚度小。
The eluvial soils on slopes where surface flow occurs are mainly clayey soils with some blocks or debris. They have good grading distribution and a thin soil horizon. - 根据分形理论和投影覆盖法的原理，建立了山区河流坡面流、沟道和山溪水流糙率直接测量方法。
Based on the fractal theory and the projective covering method, this paper developed a method for measuring roughness coefficient of overland flow, gully and stream flows directly.
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