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金属矿山 ›› 2020, Vol. 50 ›› Issue (05): 70-75.

• 协同开采 • 上一篇    下一篇

地下金矿非爆破机械化连续协同开采技术

陈 维,杜 坤,陈 伟   

  1. 1. 湖南黄金洞矿业有限责任公司,湖南 岳阳 414507;2. 中南大学资源与安全工程学院,湖南 长沙 410083;3. 中南大学高等研究中心,湖南 长沙 410083
  • 出版日期:2020-05-15 发布日期:2020-06-12
  • 基金资助:
    国家自然科学基金项目(编号:51774326)

Non-explosive Machinery Continuous Synergetic Mining Technique for Underground Gold Mine

Chen Wei,Du Kun,Chen Wei   

  1. 1. Huangjindong Mining Industry Limited Company of Hunan,Yueyang 414507,China;2. School of Resources and Safety Engineering,Central South University,Changsha 410083,China;3. Advance Research Center,Central South University,Changsha 410083,China
  • Online:2020-05-15 Published:2020-06-12

摘要: 实现地下硬岩矿山非爆破机械化连续开采一直是业内追求的目标,随着材料与机械学科的深入发展以及卸荷岩石力学理论及岩石诱导破裂机制的不断完善,虽然少数地下硬岩矿山开始践行非爆破机械化连 续开采,并取得了很多有益的经验,但成功的案例仍然较少,并且非爆破机械化开采的应用条件尚不明确。结合金塘3#脉和杨山庄202#脉的赋存产状,提出了一种地下金矿非爆破机械化连续协同开采技术,即采用 EBZ160.Z型巷道掘进机开采金矿。根据矿体的厚度、掘进机截割宽度和充填方式的不同,分别提出了薄矿脉水平分层废石胶结充填法、薄矿脉水平分层尾砂胶结充填法、厚矿脉水平分层废石胶结充填法和厚矿脉水平 分层尾砂胶结充填法4种变体非爆破机械化连续协同开采方法。非爆破机械化连续协同开采技术所涵盖的“玻璃钢锚杆+高强纤维网+木支柱”支护、铲运机或装载机出矿及废石/尾砂胶结充填等工艺均取得了较好的实 践效果,具有开采成本低、劳动强度小、机械化程度高、作业连续及效率高等优势,大幅度提高了地下矿山的本质安全。

关键词: 非爆破, 协同开采, 硬岩, 地下金矿, 掘进机

Abstract: One of the final goals for mining industry is to realize non-explosive machinery continuous mining method and technology for hard rock mines. With the rapid development of materials and machinery subjects, and the in-depth understanding the theory of unloading rock mechanical properties and rock induced fracture technique, some mines start to practice non- explosive mechanical continuous mining and gain a lot of useful experience. However, the applying conditions for non-explosive machinery continuous mining are still unclear. In view of the detailed storage conditions of Jintang 3# orebody and Yangshanzhuang 202# orebody, a kind of non-explosive machinery continuous synergetic mining method is put forward, i.e. mining gold ore using an EBZ160.Z tunnel boring machine. According to ore body thickness, the cutting width and height of EBZ160.Z tunnel boring machine, and backfilling methods, the specific implementation techniques are given, i.e. horizontal layering and cemented waste rock filling method for thin veins, horizontal layering and cemented tailing filling method for thin veins , horizontal layering and cemented waste rock filling method for thick veins, and horizontal layering and cemented tailing filling method for thick veins. In field practice, the “FRP anchor + high strength fiber mesh + wood” support methods, ore drawing by scraper or loader, and waste rock/tailings cemented backfilling all obtains good results.The study results show that the non-explosive machinery continuous synergetic mining method has the advantages of low mining cost,low labor intensity, high degree of mechanization,continuous operation and high efficiency, which greatly improves the intrinsic safety of the mine.

Key words: Non-explosive, Synergetic mining, Hard rock, Underground gold mine, Road header