采空区稳定性数值模拟分析  

Numerical simulation analysis on the stability of mined-out area

作　　者：程秋亭[1] 邓飞[1] 陈艳红[1] 夏弋江[1] 王晓军[1] 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000

出　　处：《有色金属科学与工程》2015年第2期85-88,共4页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(51364011)

摘　　要：为了研究采空区的稳定性,在现场详尽调查、室内力学试验基础上,应用FLAC-3D方法对采空区应力分布规律以及围岩变形进行数值模拟,研究表明:随着各阶段矿体回采,空区各间柱及顶底板出现正应力集中区;各阶段空区间柱、顶底板、空区两侧围岩显现出压应力集中区;采场应力在增大,偏移量也相应的增大;矿柱在压应力的作用下可能形成突变剪切破坏.In order to study the stability of mined-out area, FLAC-3D numerical simulation of the stress distribution law and surrounding rock deformation is carried out on the basic of detailed investigation and mechanical test. The researches show that ： empty area between the column and the normal stress of roof and floor show the normal stress clusters with the orebody stoping of each stage;offset increases accordingly with the increase of stope stress;pillar shear failure may form under the action of compressive stress.

关 键 词：FLAC-3D数值模拟 采空区 应力分布规律 稳定性分析 

分 类 号：TD325.3[矿业工程—矿井建设]