基于突变理论的黄土边坡失稳模型研究  

Research on Instability Analysis Model of Loess Slope Based on Catastrophe Theory

作　　者：胡凯森 胡晋川 张守昆 李玉 HU Kai-sen;HU Jin-chuan;ZHANG Shou-kun;LI Yu(Shanxi Provincial Transportation Planning Survey and Design Institute Co.Ltd.,Taiyuan 030032,China;Changji College,Changji 831199,China;CCCC First Highway Engineering Group Third Engineering Co.Ltd.,Beijing 101102,China)

机构地区：[1]山西省交通规划勘察设计院有限公司,太原市030032 [2]昌吉学院,昌吉市831199 [3]中交一公局第三工程有限公司,北京市101102

出　　处：《公路》2025年第1期152-157,共6页Highway

摘　　要：根据黄土工程地质分区和地质结构模型,结合黄土土性参数的空间统计特性和非线性强度特征,将突变理论引入黄土边坡稳定性研究中,建立了基于突变理论的黄土边坡失稳模型。通过研究表明:黄土边坡系统的变化特征具有突变模型的基本特征;突变模型能很好地反映黄土边坡系统变形的非线性特征;突变模型能有效对边坡系统失稳临界状态进行判断;突变模型的建立对研究黄土边坡失稳破坏机理具有指导和现实意义。According to the loess engineering geological zoning and geological structure model,combined with the spatial statistical characteristics and nonlinear strength characteristics of loess soil parameters,the catastrophe theory is introduced into the stability study of loess slope,and the instability model of loess slope is established based on the catastrophe theory.The research shows that the change characteristics of loess slope system have the basic characteristics of the catastrophe model.The abrupt change model can reflect the nonlinear characteristics of loess slope system well.The sudden change model can effectively establish the judgment of the critical state of slope system instability.The establishment of abrupt change model is of guiding and practical significance to the study of failure mechanism of loess slope.

关 键 词：黄土边坡 失稳机理 突变理论 模型 

分 类 号：U416.1[交通运输工程—道路与铁道工程] P642.131[天文地球—工程地质学]