某矿山厚大第四系下开采对地表的影响分析  

Analysis on the Influence of Mining on Surface under Thick Quaternary in a Mine

作　　者：黄斌 张宁 林玉川 李庸庆 王靖 任远芳 HUANG Bin;ZHANG Ning;LIN Yuchuan;LI Yongqing;WANG Jing;REN Yuanfang(Huoqiu County Qingfa Mining Co.,Ltd.;Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.;Sinosteel Maanshan Mining Institute Engineering Survey and Design Co.,Ltd.;Huawei Metal Mineral Resources Efficient Recycling National Engineering Research Center Co.,Ltd.;Anhui Fukai Mining Co.,Ltd.)

机构地区：[1]霍邱县庆发矿业有限责任公司,安徽省六安市237000 [2]中钢集团马鞍山矿山研究总院股份有限公司 [3]中钢集团马鞍山矿院工程勘察设计有限公司 [4]华唯金属矿产资源高效循环利用国家工程研究中心有限公司 [5]安徽富凯矿业有限公司

出　　处：《现代矿业》2022年第2期115-118,共4页Modern Mining

摘　　要：某铁矿体上方为厚大的第四系松散层,并留设不小于50 m厚的护顶矿柱来控制地表岩移。为探究地下开采对地表建(构)柱物产生的影响,通过现场取样、室内力学实验和岩体参数折减的方法获取矿山岩体力学参数,借助FLAC^(3D)有限元软件进行数值模拟,对矿区岩体移动监测范围内的位移、变形和曲率进行分析。结果表明:留设隔离层矿柱以及采用分段空场嗣后充填法开采,能够保证厚大第四系上建(构)筑物的安全。Above a certain iron ore body is a thick Quaternary loose layer,and a capping pillar with a thickness of no less than 50 m is left to control the surface rock movement.In order to explore the influence of underground mining on surface building,the mechanical parameters of mine rock mass are obtained by field sampling,indoor mechanical experiments and rock parameter reduction.The numerical simulation is carried out by FLAC^(3D) finite element software,and the displacement,deformation and curvature in the range of rock mass movement monitoring in the mining area are analyzed and studied.The results show that the safety of the upper structures of the thick and large Quaternary can be ensured by setting the isolation layer ore pillars and adopting the subsection open field and subsequent filling method.

关 键 词：地下开采 第四系 岩体移动 

分 类 号：TD325[矿业工程—矿井建设]