长江科学院院报 ›› 2018, Vol. 35 ›› Issue (1): 47-51.DOI: 10.11988/ckyyb.20161043

• 水土保持与生态建设 • 上一篇    下一篇

新型水溶性聚氨酯对紫色土坡面产流产沙的影响

朱秀迪1, 丁文峰1, 张冠华1, 李清溪1, 王强2   

  1. 1.长江科学院 水土保持研究所, 武汉 430010;
    2.天津市水文水资源勘测管理中心, 天津 300060
  • 收稿日期:2016-10-10 出版日期:2018-01-01 发布日期:2018-01-11
  • 作者简介:朱秀迪(1992-),女,湖北十堰人,博士研究生,主要从事水土保持与流域侵蚀产沙及调控方面的研究工作。E-mail:lorrainedi@foxmail.com
  • 基金资助:
    国家自然科学基金项目(41271303,40901135);水利部技术示范项目(SF-201601)

Impact of New Water-soluble Polyurethane on Runoff andSediment Yield on Purple Soil Slope

ZHU Xiu-di1,DING Wen-feng1 ,ZHANG Guan-hua1,LI Qing-xi1, WANG Qiang2   

  1. 1.Soil and Water Conservation Department, Yangtze River Scientific Research Institute, Wuhan 430010,China;
    2.Tianjin Municipal Administrative Center of Hydrology and Water Resources,Tianjin 300060,China
  • Received:2016-10-10 Published:2018-01-01 Online:2018-01-11

摘要: 为探索新型水溶性聚氨酯防治紫色土坡面水土流失的效果,采用室内人工模拟降雨试验,分析了不同雨强条件下5%浓度的新型水溶性聚氨酯(W-OH)对紫色土坡面入渗、产流和侵蚀过程的影响。结果表明:紫色土坡面施加W-OH能显著提高土壤抗蚀性,从而减小坡面侵蚀产沙量;在42,72,112 mm/h 3种雨强试验条件下,施加W-OH组的坡面与对照组坡面相比,尽管坡面径流增大了12.40%~203.41%,但产沙量减小了89.40%~97.43%,沙输移率降低了86.67%~97.45%,且当雨强较大时(72,112 mm/h),施加W-OH组的土壤可蚀性降低率为96.80%~97.41%。研究结果为紫色土坡面防蚀提供了一定的理论依据及应用指导。

关键词: W-OH, 紫色土, 下渗, 产流产沙, 人工模拟降雨

Abstract: In the purpose of investigating the effect of treating soil erosion of purple soil slope by new water-soluble polyurethane (W-OH), we analyzed the impact of W-OH of 5% concentration on the processes of infiltration, runoff and erosion of purple soil slope under different rainfall intensities through indoor artificial rainfall experiment. We found that W-OH could remarkably enhance the erosion resistance of soil and reduce sediment yield on slope surface. Under test conditions of three different rainfall intensity (42, 72, and 112mm/h), the sediment yield on W-OH treated group declined by 89.40%-97.43%, and sediment transport rate by 86.67%-97.45% despite that runoff increased by 0.12-2.03 times compared with the control group. Under heavy rainfall(72 and 112 mm/h), the erodibility of W-OH treated soil reduced by 96.80%-97.41%. The conclusions offer theoretical basis and application guidance for the protection of purple soil slope.

Key words: W-OH, purple soil, infiltration, runoff and sediment yield, artificial simulated rainfall

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