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基于西北地区黄土高原水土流失严重、地形复杂、外源材料运输困难的实际情况,提出坡面喷施高分子聚合物——土壤固化剂、沥青乳剂、有机硅树脂,以期提高其集流效率。通过室外人工降雨模拟试验,分析了坡面经3种材料处理后,在不同浓度,不同雨强下对产流时间、集流效率、土壤侵蚀量的影响。结果表明:3种材料处理的产流时间较对照提早1/3倍;集流效率平均为72.0%,连续降雨条件下为85%以上;土壤侵蚀量明显较对照降低;3种材料的集流效果顺序为:土壤固化剂>有机硅树脂>沥青乳剂。本研究对西北地区发展新型集雨材料及雨水集蓄利用新形式具有一定指导意义。
Based on the actual situation of soil erosion, complicated topography and difficult transportation of exogenous materials in the Loess Plateau, this paper proposed to spray polymer polymers - soil curing agent, asphalt emulsion and silicone resin on the slope in order to improve its current collection efficiency. Through outdoor artificial rainfall simulation test, the effects of three kinds of materials on the runoff, flow efficiency, and soil erosion at different concentrations and rainfall intensities were analyzed. The results showed that the effluent flow time of the three materials was 1/3 times of that of the control, the average efficiency of current collection was 72.0% and the continuous rainfall was more than 85%, and the soil erosion was obviously lower than that of the control. The order of effect is: Soil Curing Agent> Silicone Resin> Asphalt Emulsion. This study is of guiding significance to the development of new rainwater harvesting materials and new forms of rainwater harvesting and storage in Northwest China.