金川二矿区厚大矿体开采新技术研究  

A Novel Technology for Mining Large & Thick Orebody in Jinchuan № 2 Mine Area

作　　者：马长年[1] 徐国元[1,2] 倪彬 江文武[1] 刘晓明[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]华南理工大学土木与交通学院,广东广州510641 [3]西安有色冶金设计研究院,陕西西安710001

出　　处：《矿冶工程》2010年第6期6-9,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金资助项目(59804007);教育部"优秀青年教师资助计划"资助项目(EYTP22134)

摘　　要：针对金川二矿区开采现状,在原有开采方案的基础上提出了一种新的开采方案,即矿体中部一个盘区有序滞后一个分段回采,并同步割帮处理滞后盘区的开采方案。在地质条件、进路结构参数以及充填材料力学性质相同的情况下,采用FLAC3D模拟分析了8种不同开采方案下采场周围岩层应力、位移变化情况。结果表明,与连续开采和两步骤开采方案相比,新开采方案既能使矿体开采之后的主应力分步调整趋于均匀,又能够较好的抑制上盘、下盘围岩向采空区赋存方位的收敛变形。Aiming at the status quo on mining operation in Jinchuan № 2 Mine area,a novel method based on the original mining scheme was brought forward,namely a panel in the middle of ore body orderly lags behind another segment in stoping and the side of lagging area is cut synchronously.Simulation analysis with FLAC3D was performed for the stress and displacement of surrounding rock mass in the stope under eight different mining schemes with the same strata,the same structural parameters of drift stope,and the same mechanical properties of filling media.Results showed that in comparison with the continuous exploitation project and two-stage mining project,the new scheme can make the principal stress homogeneously distributed,and restrain the convergent deformation occurred in wall rock mass.

关 键 词：金川二矿区 厚大矿体 开采 回采顺序 数值模拟 

分 类 号：TD853[矿业工程—金属矿开采]