长江科学院院报 ›› 2011, Vol. 28 ›› Issue (7): 67-71.

• 岩土工程 • 上一篇    下一篇

煤系土浅层滑坡的影响因素敏感性分析

祝 磊 1,2,洪宝宁 3   

  1.  1. 水利部淮河水利委员会 水利科学研究院,安徽 蚌埠 233000 ; 2. 安徽省建筑工程质量监督检测站,合肥 230088 ; 3. 河海大学 岩土工程科学研究所,南京 210098
  • 出版日期:2011-07-01 发布日期:2012-11-08

Sensitivity Analysis on Influencing Factors of Shallow Landslide of Coal Measure Strata

ZHU Lei 1,2, HONG Bao-ning 3   

  1. 1.Water Resources Research Institute of the Huaihe River Commission of the Ministry of Water Resources,  Bengbu 233000, China ; 2.Construction Quality Supervision and Test Station of Anhui Province,  Hefei 230088, China ;3.Geotechnical Research Institute of Hohai University, Nanjing 210098, China
  • Online:2011-07-01 Published:2012-11-08

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。

关键词: 煤系土,  , 浅层滑坡 , 弹塑性有限元 , 接触算法 , 敏感性

Abstract:  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.

Key words: coal measure strata ,    shallow landslides ,    elastoplastic FEM ,    contact algorithm  ,   sensitivity

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