东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (8): 1181-1186.DOI: 10.12068/j.issn.1005-3026.2018.08.023

• 资源与土木工程 • 上一篇    下一篇

基于多方法联合的露天转地下境界矿柱厚度优化

徐帅1, 安龙1, 李元辉1, 卢栋2   

  1. (1. 东北大学 深部金属矿山安全开采教育部重点实验室, 辽宁 沈阳110819;2. 山东黄金集团归来庄矿业有限公司, 山东 临沂273300)
  • 收稿日期:2017-03-15 修回日期:2017-03-15 出版日期:2018-08-15 发布日期:2018-09-12
  • 通讯作者: 徐帅
  • 作者简介:徐帅(1981-),男,河南南阳人,东北大学副教授,博士; 李元辉(1968-),男,辽宁大石桥人,东北大学教授,博士生导师.冯明杰(1971-), 男, 河南禹州人, 东北大学副教授; 王恩刚(1962-), 男, 辽宁沈阳人, 东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51674061,51604060);中央高校基本科研业务费专项资金资助项目(N160107001,N160104001).国家自然科学基金资助项目(51171041).

Multi-method Based Optimization of Crown Pillar Thickness from Open Pit to Underground

XU Shuai1, AN Long1, LI Yuan-hui1, LU Dong2   

  1. 1.Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang 110819, China; 2. Guilaizhuang Gold Mine, Shandong Gold Group Co. Ltd., Linyi 273300, China.
  • Received:2017-03-15 Revised:2017-03-15 Online:2018-08-15 Published:2018-09-12
  • Contact: AN Long
  • About author:-
  • Supported by:
    -

摘要: 以山东黄金集团归来庄金矿露天转地下工程为依托,基于理论计算、比例跨度法和相似条件类比法等多种方法进行联合分析,确定归来庄金矿露天转地下境界矿柱的最优厚度范围为6~15m.基于FLAC3D,计算不同厚度境界矿柱条件下,地下开采对境界矿柱和边坡稳定性的影响.结果表明,当境界矿柱厚度小于10m时,地下开挖导致顶板变形量较大,且境界矿柱厚度越小,位移增量越大;当境界矿柱厚度大于10m时,地下开挖导致的顶板变形较小且趋于平稳,10m为境界矿柱厚度的最优值.

关键词: 露天转地下, 境界矿柱厚度, 理论分析, 数值计算, 比例跨度法

Abstract: Taking a project from open pit to underground mining in the Guilaizhuang Gold Mine of Shandong Gold Group Co., Ltd. as an example, multiple methods including theoretical calculation, scaled span approach and analogy under similar conditions are employed to analyse the rational scope of crown pillar thickness. The influence of underground mining on the crown pillar and slope stability is analysed with different thickness crowns using the software FLAC3D. The calculation results show that the 10m thick crown pillar can be viewed as a turning point: when the thickness is less than 10m, the roof deformation caused by underground mining is large, and the thinner the crown pillar, the larger the displacement increment; when the thickness is over 10m, the roof deformation from underground mining is relatively small and tends to remain stable.

Key words: open-pit to underground, crown pillar thickness, theoretical analysis, numerical calculation, scaled span approach

中图分类号: