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金属矿山 ›› 2008, Vol. 38 ›› Issue (9): 23-25+30.

• 采矿工程 • 上一篇    下一篇

某深井矿山岩爆特征及形成机理研究

吉学文1,王春来2,吴爱祥2,严庆文1,黄学贵1   

  1. 1.云南驰宏锌锗股份有限公司;2.北京科技大学
  • 收稿日期:2008-07-28 出版日期:2008-09-15 发布日期:2011-07-14
  • 基金资助:

    国家“十一五”科技支撑计划项目(编号:2006BAB02A01)

Study on the Rockbust Mechanism and Characteristics in a Deep Mine

Ji Xuewen1,Wang Chunlai2Wu Aixiang1,Yan Qingwen1,Huang Xuegui1   

  1. 1.Yunnan Chihong Zn &  Ge Co., Ltd.; 2. University of Science & Technology Beijing
  • Received:2008-07-28 Online:2008-09-15 Published:2011-07-14

摘要: 地应力、构造发育。对矿山地质条件进行了阐述,通过现场调查,描述了岩芯饼化和围岩剥落现象,分析了岩爆特征,总结了发生岩爆的基本规律,对8#矿体进行了岩爆类型和岩爆烈度分级划分,得出了该矿体围岩从1 451 m中段至1 261 m中段具有中等至强烈岩爆倾向性,从原岩应力、地质构造及开采深度等岩爆影响因素分析了岩爆发生的成因和形成机理,为选择合理的采矿方法和岩爆控制技术措施提供了重要依据。

关键词: 深部开采, 高应力, 岩芯饼化, 岩爆, 岩层剥落

Abstract: Huize Lead & Zinc Mine of Yunnan Chihong Zn & Ge Co., Ltd is a one thousand meter-deep mine. The main problems in the mining of this hard-rock deposit include high ground stress and developed fault structure. The paper describes the mine geological conditions and the rock core caking and wall rock spalling observed in the field investigation, analyzes the rockburst characteristics, summarizes the basic law of rockburst occurrence and classifies the rockburst type and intensity of No. 8 orebody. It is concluded that the wall rock of this orebody between 1 451 m level to 1 261 m level has medium to strong trend of rockburst. The causes and mechanism of rockburst are analyzed from the initial rock stress, geological structure and mining depth, hereby providing an important basis for choosing the rational mining method and the technical measures for controlling the rockburst.

Key words: Deep mining, High stress, Rock core caking, Rock burst, Rock spalling