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利用实验数据对影响雨滴溅蚀的5个主要因子,即降雨、土壤特性、坡度、坡面流水深和植被覆被,进行了单因子分析.结果表明,坡度对雨滴溅蚀的影响先随坡降的增加而递增,当坡度超过约26°的临界值后开始减小;雨滴溅蚀随水深与雨滴直径比值h/d的增加先增大,当h/d=1时达到最大值,之后开始减小;植被覆被屏蔽系数公式中的经验参数c值可以取为0.01.通过数据分析,提出了新的坡度因子、坡面流水深屏蔽系数计算公式,从而建立了一个新的雨滴溅蚀模型.与现有模型相比,新模型全面考虑了5个主要因子的影响,经过与实验数据的对比,模拟效果良好.
One-factor analysis was conducted on the five main factors influencing the raindrops of raindrops, namely rainfall, soil characteristics, slope, depth of flow and vegetation cover by using experimental data. The results showed that the effect of slope on raindrop splashing first followed slope When the gradient reaches a critical value of about 26 °, it begins to decrease. The raindrop splash first increases with the increase of the ratio of water depth to raindrop diameter h / d, reaches the maximum when h / d = 1, The value of c in the formula of the vegetation cover shielding coefficient can be taken as 0.01.A new slope factor and formula for calculating the deep shielding coefficient of slope water flow are proposed by data analysis and a new raindrop splashing Compared with the existing model, the new model fully considered the influence of five main factors, and compared with the experimental data, the simulation effect is good.