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Reliability Analysis on Slope Stability Based on Rainfall-Induced Damage

  • Wenhui Tan
  • Danqing Gao
  • Congcong Li
Part of the Advances in Intelligent and Soft Computing book series (AINSC, volume 106)

Abstract

Rainfall infiltration is an important factor affecting slope stability. However, rainfall-induced damage of rockmass strength is not considered in slope stability analysis in most literatures at present. Therefore, from the point of view that variation of water content leads to damage of rockmass strength, a comprehensive method of damage mechanics and reliability theory is used to analyze slope stability under rainfall. Firstly, the variation features of water content and Young’s modulus under rainfall in an iron open-pit mine are studied, the relation between damage variable D and water content is built; Then, the damage model of rockmass strength parameters is made. Finally, the slope’s reliability is assessed under different rainfall duration. The results showed that reliability indexes based on rainfall-induced damage of rockmass strength are smaller than that when the damage of rockmass strength is ignored. Therefore, it is necessary to consider rainfall-induced damage in slope stability assessment. The study can provide theoretical evidence for slope stability evaluation and production safety in open pit mines.

Keywords

rainfall infiltration damage reliability slope water content 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Wenhui Tan
    • 1
  • Danqing Gao
    • 1
  • Congcong Li
    • 1
  1. 1.School of Civil and Environmental EngineeringUniversity of Science and Technology BeijingBeijingP.R. China

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