软弱破碎岩体工程地质调查与质量评价  

Engineering Geological Investigation and Quality Evaluation of Soft Fractured Rock

作　　者：江飞飞[1,2] 李向东[1,2] 盛佳[1,2] 张彩青[3] 

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]国家金属采矿工程技术研究中心,湖南长沙410012 [3]嵩县前河矿业有限责任公司,河南嵩县471433

出　　处：《黄金科学技术》2016年第3期94-99,共6页Gold Science and Technology

基　　金：国家科技部转制科研院所创新能力专项资金项目"叠层空区环境下矿体集中强化开采技术"(编号:2014EG215027)资助

摘　　要：合理的工程地质调查与岩体质量评价是地下工程设计、施工和采矿活动的基础,针对前河金矿软弱破碎类型岩体,在充分了解矿山地质、开采现状及软岩特点的基础上,采用适合软岩特点和符合矿山实际情况的测线法对其软弱破碎岩体进行详细的工程地质调查与分析,并采用MRMR-2000系统法和Q系统法分别对矿体和上下盘岩体质量进行了评价。结果表明:矿岩体中的结构面非常发育,均发育有3组以上的优势结构面,结构面平均线密度均超过25条/m;矿体及上下盘岩体均属Ⅴ级,矿岩体质量总体评价均为差,其中,下盘岩体相对稍好,上盘岩体次之,矿体最差。Reasonable engineering geological investigation and rock quality evaluation is the basis of design, construction and mining activities in underground engineering, aiming at the type of soft fractured rock in Qianhe gold mine, based on the fully understanding of the mine geology, current mining situation and characteristics of soft rock, investigated and analysed the engineering geological of soft fractured rock in detail with scan line method,which is suitable for the characteristics of soft rock and the mine＇s actual situation,and used the MRMR-2000 system and Q system to evaluate the rock mass quality of orebody, hanging wall and footwall rock mass separately.The result shows that the structural plane in orebody and its surrounding rock are extraordinarily growing, they are contain more than 3 groups of preferred structure plane, and the average line density of them are more than 25 lines per meter; orebody land its surrounding rock are classified as V, and the overall evaluation of rock quality are bad, of which the footwall rock mass is relatively and slightly better, the hanging wall rock mass takes the second place, and the orebody is the worst. K

关 键 词：软弱破碎岩体 工程地质调查 MRMR-2000分级系统 岩体质量评价 

分 类 号：P642[天文地球—工程地质学] TU45[天文地球—地质矿产勘探]