罗河铁矿凿岩硐室条柱开采扰动效应研究  

Research on the Disturbance Effect of Rock Drilling Chamber Strip Mining in Luohe Iron Mine

作　　者：刘康 何晓文 袁锦锋 魏福海 袁海涛 LIU Kang;HE Xiaowen;YUAN Jinfeng;WEI Fuhai;YUAN Haitao(Anhui Masteel Luohe Mining Co.,Ltd.)

机构地区：[1]安徽马钢罗河矿业有限责任公司,安徽省合肥市230800

出　　处：《现代矿业》2021年第7期70-74,共5页Modern Mining

摘　　要：针对罗河铁矿20联巷以北高阶段采场的凿岩硐室预留条柱大面积破坏现象,采用计算机数值模拟技术,分析了硐室支撑条柱的采场稳定性。结果表明:矿体拉应力主要位于采空区顶板处,压应力主要集中于中间条柱和两帮矿体处。左右硐室开采扰动后岩体的最大主应力值随着y轴的延伸而逐渐变化,后续的开采活动产生了明显应力扰动。In view of the large area failure phenomenon of reserved pillar in drilling chamber in high stage stope north of No.20 roadway in Luohe Iron Mine,the stope stability of supporting pillar in chamber was analyzed by computer numerical simulation technology.The results show that the tensile stress of the ore body is mainly located in the roof of the goaf,and the compressive stress is mainly concentrated in the middle pillar and the two sides of the ore body.The maximum principal stress of rock mass gradually changes with the extension of y axis after the disturbance of left and right chamber mining,and the subsequent mining activities have produced obvious stress disturbance.

关 键 词：凿岩硐室 数值模拟 应力扰动 

分 类 号：TD861.1[矿业工程—金属矿开采]