Journal of Lanzhou University of Technology ›› 2022, Vol. 48 ›› Issue (5): 142-147.

• Architectural Sciences • Previous Articles     Next Articles

Research and analysis on influencing factors of slope stability with rainfall infiltration field distribution

WANG Jiang-ping1,2, XI Hong-bing1,2, LI Bo-sheng1,2, YANG Xiao-yu3   

  1. 1. GCIGC Tianshui Construction Management LTD, Tianshui 741000, China;
    2. GCIGC Tianshui Green Assembly Construction Industry LTD, Tianshui 741000, China;
    3. School of Civil Engineering, Lanzhou Institute of Technology, Lanzhou 730050, China
  • Received:2022-01-11 Online:2022-10-28 Published:2022-11-21

Abstract: Aiming at the slope stability problem under rainfall infiltration, the unsaturated soil theory was used to study the numerical calculation of rainfall infiltration process, and four calculation examples were calculated and analyzed for the influence of rainfall intensity and permeability coefficient on slope stability. The main conclusions are as follows: (1) the matric suction of soil is beneficial to the stability of the slope, and the results obtained by ignoring the matric suction will be seriously smaller; (2) the influence of rainfall intensity on the low permeability model is not obvious, but its influence on the high permeability model is greater; (3) The stress concentration occurs at the slope angle and the top of the slope, and the strength of the soil at this position is low. The above research can provide certain technical support for the prevention and control of slope in practical engineering.

Key words: slope stability analysis, rainfall infiltration, unsaturated soil, matric suction

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