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Erosion Failure of a Soil Slope by Heavy Rain: Laboratory Investigation and Modified GA Model of Soil Slope Failure

Author

Listed:
  • Xiaofei Jing

    (School of Safety Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
    School of Civil Engineering, University of Queensland, Brisbane QLD 4072, Australia)

  • Yulong Chen

    (Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China)

  • Changshu Pan

    (Chongqing GaoXin engineering Survey and Design Institute Ltd., Co., Chongqing 401121, China)

  • Tianwei Yin

    (School of Civil Engineering, University of Queensland, Brisbane QLD 4072, Australia)

  • Wensong Wang

    (College of Resources and Environmental Sciences, Chongqing University, Chongqing 400030, China)

  • Xiaohua Fan

    (School of Safety Engineering, Chongqing University of Science and Technology, Chongqing 401331, China)

Abstract

Rainfall has been identified as one of the main causes for slope failures in areas where high annual rainfall is experienced. The slope angle is important for its stability during rainfall. This paper aimed to determine the impact of the angle of soil slope on the migration of wetting front in rainfall. The results proved that under the same rainfall condition, more runoff was generated with the increase of slope angle, which resulted in more serious erosion of the soil and the ascent of wetting front. A modified Green-Ampt (GA) model of wetting front was also proposed considering the seepage in the saturated zone and the slope angle. These findings will provide insights into the rainfall-induced failure of soil slopes in terms of angle.

Suggested Citation

  • Xiaofei Jing & Yulong Chen & Changshu Pan & Tianwei Yin & Wensong Wang & Xiaohua Fan, 2019. "Erosion Failure of a Soil Slope by Heavy Rain: Laboratory Investigation and Modified GA Model of Soil Slope Failure," IJERPH, MDPI, vol. 16(6), pages 1-11, March.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:6:p:1075-:d:217174
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