东北大学学报（自然科学版）

东北大学学报（自然科学版） ›› 2013, Vol. 34 ›› Issue (11): 1642-1646.DOI: 10.12068/j.issn.1005-3026.2013.11.029

• 资源与土木工程 • 上一篇    下一篇

深部厚大矿体回采顺序设计及优化研究

安龙1，徐帅1，任少峰2，张雄天1   

  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山东黄金矿业(莱州)有限公司 焦家金矿，山东烟台261441)
  • 发布日期:2013-07-09
  • 通讯作者: 安龙
  • 作者简介:安龙(1987-)，男，内蒙古呼伦贝尔人，东北大学博士研究生.
  • 基金资助:
    国家自然科学基金资助项目(51204031，51109035，51274055)；中央高校基本科研业务费专项资金资助项目(N110401003，N110501001)；辽宁省博士后集聚工程资助项目(2011921005).

Study on Design and Optimization of Mining Sequence for Deep and Large Ore Body

AN Long1， XU Shuai1， REN Shaofeng2， ZHANG Xiongtian1   

  1. 1. Key Laboratory on Safe Mining of Deep Metal Mines， Ministry of Education， Northeastern University， Shenyang 110819， China； 2. Jiaojia Gold Mine，Shandong Gold Mining Industry
  • Published:2013-07-09
  • Contact: AN Long
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摘要： 针对高应力环境下的深埋厚大矿体，开展安全高效回采顺序设计及优化研究，基于产能、技术和经济指标要求，提出了5种合理的矿房回采顺序和4种矿柱回收顺序，并利用FLAC3D进行数值计算分析.计算结果表明:在回采矿房的5种合理方案中，先开采1#，5#，9#，16#，12#矿房，后开采3#，7#，10#，14#，18#矿房的“大间隔分散布置”的方案，应力集中程度最低，位移变化最小，采场安全性最高，即为矿房的最优回采顺序；在回收矿柱的4种合理方案中，先回收2#，6#，11#，15#矿柱，后回收4#，8#，13#，17#矿柱的方案，应力集中程度最低，采场安全性最高，为最优回采顺序.比较不同方案的应力分布规律和顶板位移变化规律，可以看出，盘区内采场回采后，压应力向盘区中央的矿柱迁移，在盘区内间柱处产生应力集中区，易导致间柱内采准巷道发生变形及顶板垮落现象，需加强支护工作.

关键词: 深部厚大矿体, 充填采矿法, 回采顺序, 围岩稳定性, 高应力

Abstract: The optimization sequence for the safe and effective mining of deep and largescale ore body under high stress environment was studied. Five mining sequences for room and four mining sequences for the pillar have been put forward according to a reasonable production capacity， technical and economic indicators， and are used for establishing the numerical models of FLAC3D . The results show that， among the five room mining sequences the optimal mining sequence is to extract ore rooms 1#， 5#， 9#， 16# and 12# and then followed by ore rooms 3#， 7#， 10#， 14# and 18#， where the stress concentration is the lowest and the displacement variation is smallest. The optimal mining sequence for the pillars is that the pillars 2#， 6#， 11#， 15# in panel mining are firstly extracted and then followed by pillars 4#， 8#， 13#， 17#， where the stress concentration is the lowest. To compare the regular pattern of stress release and the variation of displacement under different schemes， it is observed that after mining stopes of the panel， compressive stress concentration moves to the rib pillar of the central panel， which will be harmful to the roadway of rib pillars. Therefore， support in this area should be strengthened.

Key words: deep large size orebody, subsequent bockfill, mining sequence, rock stability, high stress

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