高塬沟壑区雨水集流效率研究

通过6个径流小区对自然荒坡和道路场院的模拟对比试验，探索雨水集流场建设中的新材料、新工艺、新方法，为雨水集流场建设提供技术支撑。在模拟自然荒坡的3个径流小区中，无机防水剂1#和硅烷偶联剂对地表喷施处理后，集流效率明显高于对照；在模拟道路场院的3个径流小区中，无机防水剂4#+5kg/m²水泥和硅烷偶联剂+5kg/m²水泥对地表土壤掺混处理后，硅烷偶联剂+5kg/m²水泥集流效率明显高于对照。试验共筛选出了3种新材料，可用于雨水集流场建设。次降

Study on Rainwater Harvesting Efficiency in Hilly-gully Region of Tableland

Through simulated experiment of 6 runoff plots of barren hill and road-yard, the new material, technology and method are explored to provide technique for establishing rainwater catchment.In the three runoff plots on simulated barren hill, the rainwater harvesting efficiency is higher after inorganic waterproof agent No.1 and silane conpling agent has been sprayed on the ground; in the three runoff plots on simulated road-yard, after been mixed and treated with inorganic waterproof agent No.4+cement 5 kg/m² and silane conpling agent + cement 5 kg/m², the rainwater harvesting efficiency of the latter is higher than the contrast.Finally, three types of material are selected to apply to establishing rainwater catchment.The greater the rainfall and rainfall intensity is, the rainwater harvesting efficiency will be large; the moisture of ground before rainfall is larger,as well as the rainwater harvesting efficiency.