铁道标准设计2017，Vol.61Issue(7)：141-146,6.DOI:10.13238/j.issn.1004-2954.2017.07.031
基于遍布节理模型的顺层边坡稳定性影响因素分析
Analysis of Influence Factors on the Stability of Bedding Slope Based on Joint Model
摘要
Abstract
Under stress, the layered rock mass exhibits more complicated mechanical behavior with respect to isotropic rock mass. In the light of the destruction errors in stress behavior and deformation mechanism due to the widely used isotropic constitutive model, and with reference to a tunnel entrance slope protection on Chengdu-Lanzhou high speed railway, the ubiquitous-joint mode is employed to describe the anisotropic characteristics of stratified rock mass, and strength reduction is performed on the rock mass and the joint surface stability parameter, and the relationship with the slope safety factor is analyzed. The results show that the slope safety factor decreases first and then increases and again decreases in corresponding to the stratification dip angle; the variation law of slope safety factor is influenced by the relative size of cohesive force and internal friction angle of rock mass and joint surface, and has nothing to do with the absolute value size with higher sensitivity at the lowest 30 degree inclination of the safety factor;the shear dilation of rock mass is related to the range of joint model and the relative value of internal friction angle of rock mass and joint surface.关键词
层状岩质边坡/遍布节理模型/强度折减法/稳定性/影响因素Key words
Stratified rock slope/Ubiquitous-joint model/Strength reduction/Stability/Influential fac-tors分类
交通工程引用本文复制引用
罗福君,周晓军..基于遍布节理模型的顺层边坡稳定性影响因素分析[J].铁道标准设计,2017,61(7):141-146,6.基金项目
国家自然科学基金项目(51378436) （51378436）
铁道部科技研究开发计划项目(2010G018-C-1-3) （2010G018-C-1-3）
