基于GSI露天矿边坡岩体参数的获取与稳定性分析  

GSI-based Acquisition of Rock Mass Parameters and Qualitative Analysis of the Stability of Open-pit Mining Slope

作　　者：何怡[1,2] 陈学军[1,3] 

机构地区：[1]中国地质大学(武汉)工程学院,武汉430068 [2]洛阳理工学院土木工程学院,河南洛阳471023 [3]桂林理工大学,广西桂林541000

出　　处：《工业安全与环保》2017年第5期40-43,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(41262011);桂科能项目(11-KF-02)

摘　　要：基于边坡稳定性分析几种数值分析方法的自身特点,对Hoek-Brown强度准则中GSI定量化相关的岩体体积节理数的确定方法进行了探讨研究。以某露天采矿边坡为例,采用三维显式有限差分法进行边坡稳定性数值分析,根据岩体野外现场调查资料和室内岩石试验,结合Hoek-Brown强度准则,使用所探讨的岩体体积节理数确定方法获取了数值计算所用的岩体力学参数,分析了该露采边坡开挖后的稳定性。研究方法有助于同类型露天采矿边坡稳定性防治工作的开展,为矿区安全生产的动态信息化分析提供了决策依据。Based on the characteristics of several numerical analysis methods of slope stability analysis, an investigation was conducted on the method for determining the volumetric joint count of rock mass related to the quantification of GSI in the Hock - Brown strength criterion. An open - pit mining slope was taken as an example to carry out numerical analysis of the slope stability by the 3D explicit finite difference method. According to the data from rock mass field survey and indoor rock test and in combination with the Hock - Brown strength criterion, the method for determining the volumetric joint count of rock mass discussed in this paper was used to acquire the mechanical parameters of rock mass required for numerical calcu- lation and analyze the stability of the open - pit mining slope after excavation. The research method is helpful for the imple- mentation of stability control work for similar open - pit mining slopes and provides a basis for decision - making during dy- namic information analysis of production safety in mining areas.

关 键 词：GSI 边坡岩体参数 稳定性分析 三维显式有限差分法 

分 类 号：TD80[矿业工程—矿山开采]