摘要
基于弹塑性接触有限元强度折减法研究了影响煤系土浅层滑坡主要因素的敏感性,计算表明煤系土浅层滑坡稳定性的敏感性从大到小依次为边坡坡度、滑动面岩土体的黏聚力、滑动面岩土体内摩擦角、风化厚度、坡高,而岩土体的弹性模量和泊松比对煤系土浅层滑坡稳定性影响不显著。研究成果为煤系土堑坡设计、施工和处治提供了理论依据,具有一定的实际意义。
Elasto-plastic contact FEM with strength reduction method is employed to study the sensitivity of main influencing factors of coal measure strata shallow landslides.The calculation indicates that the sensitivity of shallow landslide stability of coal measure strata ranges from maximum to minimum as follows： the slope degree,the cohesion of slip surface soil,the internal friction angle of slip surface soil,the weathering depth,and the slope height.Elastic modulus and Poisson＇s ratio of rock-soil mass have less impact on the stability of shallow landslide of coal measure strata.The research results provide theoretical reference for the design,construction and treatment of coal measure strata slopes.
出处
《长江科学院院报》
CSCD
北大核心
2011年第7期67-71,75,共6页
Journal of Changjiang River Scientific Research Institute
关键词
煤系土
浅层滑坡
弹塑性有限元
接触算法
敏感性
coal measure strata
shallow landslides
elastoplastic FEM
contact algorithm
sensitivity
