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| 龙桥铁矿复杂采空区的探测及处理方案 | |
| 引用本文： | 李海洲,杨天鸿,张洪海,丁铭. 龙桥铁矿复杂采空区的探测及处理方案[J]. 东北大学学报(自然科学版), 2011, 32(11): 1647-1650. DOI: - |
| 作者姓名： | 李海洲 杨天鸿 张洪海 丁铭 |
| 作者单位： | 1. 东北大学资源与土木工程学院,辽宁沈阳,110819 2. 烟台黄金设计研究所,山东烟台,264000 3. 龙桥铁矿,安徽庐江,231500 |
| 基金项目： | 国家自然科学基金资助项目(50874024,10872046,50904013,51174045); 中央高校基本科研业务费专项资金资助项目(N090601003,N100601003) |
| 摘 要： | 安徽省庐江县龙桥铁矿-320 m水平采空区,发生局部塌落导致现有采空区形态不详,为保证下部矿体正常安全开采,在地表不允许塌落的情况下,采用留设隔离矿柱的方案来隔离上部采空区.在钻孔探测确定采空区形态的基础上,应用FLAC3D程序建立三维数字模型,分析了留设不同厚度隔离层对整个采空区应力分布的影响及自身稳定程度.结果表明:留设25 m厚的水平隔离矿柱可以有效地分担地压分布情况,能够保证下部矿体安全开采. |
| 关 键 词： | 采矿工程 采空区探测 稳定性 FLAC3D 数值模拟 |
Detection and Disposal of the Complex Goaf in Longqiao Iron Mine |
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| LI Hai-zhou,YANG Tian-hong,ZHANG Hong-hai,DING Ming. Detection and Disposal of the Complex Goaf in Longqiao Iron Mine[J]. Journal of Northeastern University(Natural Science), 2011, 32(11): 1647-1650. DOI: - | |
| Authors: | LI Hai-zhou YANG Tian-hong ZHANG Hong-hai DING Ming |
| Affiliation: | LI Hai-zhou1,YANG Tian-hong1,ZHANG Hong-hai2,DING Ming3(1.School of Resources & Civil Engineering,Northeastern University,Shenyang 110819,China,2.Yantai Gold Design Institute,Yantai 264000,3.Longqiao Iron Mine,Lujiang 231500,China.) |
| Abstract: | Local goaf collapse at-320 m level in Longqiao Iron Mine has caused the unknown goaf shape.Under the condition of unpermitted surface subsidence,in order to ensure the deep ore bodies safety,the interval layer should be remained.Based on the drilling detection,the goaf shape was definitely known,and then the FLAC3D was applied to analyzing the influence of stress distribution in the whole goaf under the conditions of different interval layer thickness.The results showed that the 25 m interval layer remained... |
| Keywords: | mining engineering goaf detection stability FLAC3D numerical simulation |
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