摘要
基于冬瓜山铜矿深部出矿巷道处于动态扰动影响的力学环境,结合试验数据、实测地应力数据,利用广义Hoek-Brown准则估算出矿巷道所处岩体的力学参数,然后利用FLAC 3D数值分析软件进行深部出矿巷道围岩变形特征研究。研究结果表明:动态扰动影响巷道围岩塑性区的分布及位移的变化,内部动态扰动促使出矿巷道墙角、拱角出现应力集中;外部动态扰动促使出矿巷道底鼓破坏的几率增大;不考率动态扰动时,巷道顶板最易产生破坏。
Based on the mechanical environment of roadway in deep ore-drawing and dynamic disturbance of Dongguashan Copper Mine,the mechanical parameters of rock mass of ore-drawing roadway was estimated by generalized Hoek-Brown guidelines through combining with experimental data and measured crustal stress data.Then,FLAC 3D numerical analysis software was used to study the surrounding rock deformation characteristics of deep roadway.The results show that the dynamic disturbance impact on the variety of distribution and displacement of plastic zone of roadway surrounding rock,and the corner of ore-drawing roadway and the arch angle appear stress concentration forced by the internal dynamic disturbance,while the failure probability of floor heave in ore-drawing roadway increases due to external dynamic disturbance.It also shows that the roof of roadway failures easily when the dynamic disturbance is not considered.
出处
《中国矿山工程》
2016年第5期7-11,共5页
China Mine Engineering
关键词
动态扰动
深部
出矿巷道
变形特征
dynamic disturbance
deep
ore-drawing roadway
deformation characteristics
