力学、几何参数对土质边坡稳定的敏感性分析
摘要:基于FLAC2D有限差分软件,采用强度折减法求解不同条件下的48个土质边坡的稳定系数。采用灰色系统理论中的灰色关联分析方法,对边坡稳定进行敏感性分析,通过建立边坡的灰关联数据矩阵,并对数据矩阵进行无量纲化处理,计算出各影响因素变化与边坡稳定系数之间的灰关联系数和灰关联度,从而确定各因素对土质边坡稳定系数变化的敏感性大小。结果表明,土体的粘聚力、重度、内摩擦角对边坡稳定性的影响最为敏感,剪胀角、坡角、坡高的影响次之,为实际边坡工程的合理有效设计及边坡治理提供了参考依据。
Abstract:Based on the FLAC2D finite difference software, strength reduction theory has been used to gained the stability factor of the 48 soil slopes under the different conditions. Grey Correlation Analysis Method of the Grey System Theory is employed to analyze the sensitivities of factor influencing slope stability. The matrix of correlation data is set up, the elements of which are then transformed to dimensionless parameters. The grey correlative factors and grey correlative degrees which respect to the influencing factor and the slope stability factor are computed, and the sensible factors influence slope stability are determined. The results show that the cohesion of the soil, the density and the internal friction angle are the most sensitive factors to the slope stability, and the dilatancy angle, slope angle and the slope height are taken second place, which provide a reference to the reasonably and effeetively design of the actual slope works.
中文标题：
力学、几何参数对土质边坡稳定的敏感性分析
Sensibility Analysis of Soil Slope Stability on Mechanical and Geometrical Parameter
作者：
刘立鹏1,于红杰2,陈奇1
Liu Lipeng1,Yu Hongjie2,Chen Qi1
作者简介:刘立鹏,1983年生,男,汉族,安徽六安人,硕士,主要从事工程地质方面的研究工作。E-mail:icystone2003@163.com
通讯地址：
1. 中国地质大学(北京)工程技术学院, 北京 100083; 2. 漯河职业技术学院, 河南漯河 462000
1.SchoolofEngineeringandTechnology,ChinaUniversityofGeosciences,Beijing100083; 2.LuoheVocationalTechnologyCollege,LuoheHenan462000China
中图分类号:TU413.62
出版物：岩土工程技术
收稿日期:2008-03-25
网络出版日期:2021-07-07
关键词:边坡稳定性,影响因素,强度折减理论,灰色关联分析,FLAC2D
Key words:slope stability,influencing factor,shear strength reduction theory,Grey Correlation Analysis Method,FLAC2D
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基金项目：
基金项目: 中国博士后科学基金(2005038355) 中国地质大学(北京)科学技术基金(2007019)
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