黄晓虎, 王常明, 宋朋燃, 王天佐. 2015: 黄土边坡降雨侵蚀特征的物理模拟试验研究. 工程地质学报, 23(4): 725-730. DOI: 10.13544/j.cnki.jeg.2015.04.021
    引用本文: 黄晓虎, 王常明, 宋朋燃, 王天佐. 2015: 黄土边坡降雨侵蚀特征的物理模拟试验研究. 工程地质学报, 23(4): 725-730. DOI: 10.13544/j.cnki.jeg.2015.04.021
    HUANG Xiaohu, WANG Changming, SONG Pengran, WANG Tianzuo. 2015: PHYSICAL SIMULATION EXPERIMENT FOR CHARACTERISTICS OF LOESS SLOPE EROSION. JOURNAL OF ENGINEERING GEOLOGY, 23(4): 725-730. DOI: 10.13544/j.cnki.jeg.2015.04.021
    Citation: HUANG Xiaohu, WANG Changming, SONG Pengran, WANG Tianzuo. 2015: PHYSICAL SIMULATION EXPERIMENT FOR CHARACTERISTICS OF LOESS SLOPE EROSION. JOURNAL OF ENGINEERING GEOLOGY, 23(4): 725-730. DOI: 10.13544/j.cnki.jeg.2015.04.021

    黄土边坡降雨侵蚀特征的物理模拟试验研究

    PHYSICAL SIMULATION EXPERIMENT FOR CHARACTERISTICS OF LOESS SLOPE EROSION

    • 摘要: 黄土边坡的侵蚀破坏是引起黄土地区公路边坡自然灾害的主要诱因。通过建立室内边坡降雨冲刷物理模型, 进行黄土边坡侵蚀破坏的模拟试验, 再现边坡溅蚀、片蚀、沟蚀、坍塌的基本破坏过程, 并对坡面降雨冲刷的演变过程和侵蚀机理进行了细致的描述和分析。试验表明:在一定的降雨雨强下, 径流TSS(携砂能力)和单位面积侵蚀泥沙量随着试验坡度的增加逐渐增加, 而径流总量、侵蚀干泥沙量随着坡度的增加而相应变小。同时, 黄土边坡侵蚀冲刷过程中的主要侵蚀能力参数如坡面径流总量、汇流干泥沙量、侵蚀干泥沙量等与降雨雨强之间存在相应的关系。

       

      Abstract: The erosion is the main cause of natural disasters of the loess highway slope. This paper uses the slope erosion experiment with simulated rainfall model. It can reproduce the splash erosion slope, sheet erosion, gully erosion, and collapse of basic failure process of slope. It can make detailed description and analysis of the process of erosion. The experiment shows that erosion sediment per unit area increase gradually with the increase of experiment slope and total runoff. The erosion sediment decreases gradually with the increase of experiment slope. Meanwhile, there is a corresponding relationship among the main parameters of loess slope erosion such as total erosion runoff, confluence sediment, erosion sediment, and rainfall intensity.

       

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