摘要
强度折减法在边坡稳定性评价中得到了广泛应用,它是以线性的Mohr-Coulomb准则为依据进行的。采用Hoek-Brown准则与强度折减原理相结合的方法,以某铁矿矿区的边坡为例进行稳定性分析研究,并对风化程度不同的岩层采用不同的强度准则,进行了对比分析。结果表明:Hoek-Brown强度准则适用于风化程度较小的岩层;当考虑地表荷载时,其作用范围的大小并不会影响边坡的稳定性,并且对于边界条件的影响也不明显。
Strength reduction method has been widely used in slope stability evaluation, and it is based on linear Mohr-Coulomb criterion. Taking the slope for example in a certain iron ore mining area, Hoek- Brown criterion, which is combined with strength reduction principle, is used to make stability analysis and for the different weathering degree layers, the different strength criterion is adopted to make the comparative analysis. The results show that Hoek-Brown strength criterion is suitable for the analysis of weak weathering degree rock layers. When the surface load is taken into consideration, its scope values won＇t affect the slope stability, and the influence that it makes on the boundary conditions is not obvious.
出处
《公路》
北大核心
2014年第1期86-91,共6页
Highway
基金
武汉市科技局社会发展科技攻关计划项目
项目编号201160823268
