| 坡面水蚀过程与地形演变关系试验研究 |
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| 引用本文： | 刘金铎,薛海,董明家,刘文静.坡面水蚀过程与地形演变关系试验研究[J].人民黄河,2012(1):80-82,88. |
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| 作者姓名： | 刘金铎 薛海 董明家 刘文静 |
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| 作者单位： | 华北水利水电学院 |
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| 基金项目： | 国家重点基础研究发展计划专题(2011CB403305);国家自然科学基金资助项目(50809028);河南省高等学校青年骨干教师资助计划项目(2010GGJS-124);华北水利水电学院高层次人才科研启动资助项目(200805);华北水利水电学院研究生教育创新计划基金资助项目(YK2010-11) |
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| 摘 要： | 采用径流冲刷试验的方式对坡面水蚀过程进行研究,记录了在不同坡度和不同冲刷流量工况下坡面侵蚀量、侵蚀沟宽和溯源速度的变化。结合坡面侵蚀沟头溯源速度、断面侵蚀沟宽度等的变化曲线,分析了水蚀过程中坡面侵蚀量与地形形态变化的关系。结果表明:流量和坡度是水蚀过程的动力因素;溯源速度、沟壁的坍塌展宽及细沟的横向合并是导致坡面侵蚀量出现波动、峰值大小以及出现时间早晚的根本原因;坡面侵蚀方式与地形演变过程有着密切的关系。
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| 关 键 词： | 坡面 水蚀过程 微地形演变 坡面侵蚀量 细沟侵蚀 冲刷试验 |
Experimental Study on Relationship Between Water Erosion Process of Slope and Terrain Evolution |
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| LIU Jin-duo,XUE Hai,DONG Ming-jia,LIU Wen-jing.Experimental Study on Relationship Between Water Erosion Process of Slope and Terrain Evolution[J].Yellow River,2012(1):80-82,88. |
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| Authors: | LIU Jin-duo XUE Hai DONG Ming-jia LIU Wen-jing |
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| Affiliation: | (North China University of Water Resources and Electric Power,Zhengzhou 450011,China) |
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| Abstract: | Runoff experiments were conducted on the water erosion process of slope.Slope erosion amounts,rill width and retrogression velocity were recorded and micro-terrain evolution was analyzed in different experiment conditions.Compared with the timely varying curves of slope terrain evolution parameters(retrogression velocity,section erosion width),the relationship between slope erosion amounts and terrain morphology was ananlyzed.The results show that the discharge and slope gradient are the dynamic factors in water erosion process;retrogression velocity,collapse and broadening of rill and lateral merger are the basic reasons for the change of slope erosion amounts and slope erosion patterns are closely related to terrain evolution process. |
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| Keywords: | slope water erosion process micro-terrain evolution slope erosion amounts rill erosion erosion experiment |
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