罗河铁矿岩体节理裂隙倾角调查与统计研究  

Investigation and Statistical Study on the Inclination of Rock Joint Fissures in Luohe Mine

作　　者：朱宗杰 孙仕平 王世松 刘成皓 ZHU Zongjie;SUN Shiping;WANG Shisong;LIU Chenghao(Anhui Masteel Luohe Mine 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230001

出　　处：《现代矿业》2021年第4期43-46,51,共5页Modern Mining

摘　　要：节理裂隙倾角的分布特征对工程岩体的强度与稳定性有着重要影响。针对罗河铁矿-455~-515 m水平矿区进行节理裂隙倾角调查统计,利用数字近景摄影方法获取节理裂隙7400条,分析了节理裂隙倾角的分布特征。结果表明,全矿区倾角为60°~90°的节理裂隙约占全区40%,-455,-470,-508,-515 m水平矿区的节理裂隙较为发育,节理的分布密度较大,这些水平矿区岩体稳定性相对较差。研究结果为罗河铁矿优化开采方案、预防风险事故提供了一定的依据。The distribution characteristics of the inclination angle of joint fissures have an important influence on the strength and stability of engineering rock masses.For Luohe Iron Mine's-455~-515 m hor⁃izontal mining area,the joint fissure inclination angle survey and statistics were carried out.The digital close-range photography method was used to obtain 7400 joint fissures,and the distribution characteristics of the joint fissure inclination angle were analyzed.The results show that the joint fissures with an inclina⁃tion angle of 60°~90°account for about 40%of the whole mining area,and the joint fissures in the horizon⁃tal mining area of-455,-470,-508,and-515 m are more developed,and the distribution density of joints is larger.The stability of rock mass in these horizontal mining areas is relatively poor.The research re⁃sults provide a certain basis for optimizing the mining plan of Luohe Iron Mine and preventing risk acci⁃dents.

关 键 词：罗河铁矿 岩体 节理裂隙 倾角 玫瑰图 

分 类 号：TD851[矿业工程—金属矿开采]