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通过人工模拟降雨试验,对3个雨强下(1.00,1.67,2.33mm/min)和3种处理(未结皮、5min结皮、10min结皮)的崩岗崩积体坡面的产流产沙及细沟的发育与形态特征进行研究,结果表明:结皮产生使崩积体坡面的产流时间提前,出现细沟的时间延迟,土壤侵蚀量及细沟侵蚀密度、侵蚀宽度、侵蚀深度减少,结皮的存在具有减缓土壤侵蚀的作用;但10min结皮的产流时间和出现细沟的时间均比5min结皮的提前,土壤侵蚀量及细沟侵蚀程度增加,说明结皮程度高的侵蚀效应大于结皮程度低的,结皮只在一定程度上起到抗侵蚀的效果。
Through artificial simulated rainfall test, the abortion rate of the collapse collapsible body surface under three rainfall intensities (1.00,1.67,2.33mm / min) and three treatments (un-crusting, 5min crusting and 10min crusting) The results showed that the generation of crust accelerated the runoff time of the slope, the time delay of the rill, the amount of soil erosion and the erosion density, erosion width and erosion Depth and the existence of crust had the effect of reducing soil erosion. However, the runoff time and the occurrence of rill in 10 min were earlier than that in 5 min, and the soil erosion and rill erosion increased, indicating that the degree of crust High erosion effect is greater than the degree of skin crust, crust play a certain extent, anti-erosion effect.