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主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
小煤柱工作面随采过程中相邻采空区遗煤自燃特性研究
  • Title

    Study on spontaneous combustion characteristics of residual coal in adjacent goaf during mining of small coal pillar working face

  • 作者

    孙珍平刘啸潘陶

  • Author

    SUN Zhenping;LIU Xiao;PAN Tao

  • 单位

    中煤科工集团沈阳研究院有限公司煤矿安全技术国家重点实验室煤矿灾害防控全国重点实验室中煤新集刘庄矿业有限公司

  • Organization
    China Coal Technology and Engineering Group Shenyang Research Institute
    State Key Laboratory of Coal Mine Safety Technology
    State Key Laboratory of Coal Mine Disaster Prevention and Control
    China Coal Xinji Liuzhuang Mining Co., Ltd.
  • 摘要

    为了尽可能回收煤炭资源,小煤柱留设工作面逐渐增加,然而小煤柱留设会带来煤柱压酥和漏风的问题,从而可能对工作面的防灭火问题产生不利影响。以刘庄煤矿131103工作面为研究对象,针对随采过程中小煤柱对相邻131101工作面采空区的影响进行研究。通过小煤柱钻孔并联合闭墙观测孔监测相邻采空区的温度和气体体积分数,通过回风巷预留管道释放SF6示踪气体的方法,研究小煤柱工作面向相邻采空区的漏风特点。结果显示:小煤柱大范围压酥时间主要在顶板周期来压期间,漏风的重点区域为架后20 m以里范围;小煤柱漏风的超前影响范围在135 m左右,这部分煤体可通过提前安装温度传感器或者气体监测的方式有效预防煤炭自燃。

  • Abstract

    To recover coal resources as much as possible, the working face of small coal pillars has been gradually increased. However, the small coal pillar will cause the compression and air leakage, which may have an adverse effect on the fire prevention of the working face. This study takes 131103 working face of Liuzhuang Coal Mine as the research object, and studies the influence of small and medium-sized coal pillars on the goaf of the adjacent 131101 working face. The temperature and gas volume fraction of adjacent goaf are monitored by four small coal pillar holes combined with closed wall observation holes. Through the method of releasing SF6 tracer gas through the reserved pipeline in the return air tunnel, the air leakage characteristics of small coalpillar to adjacent goaf are studied. The results show that the large-range compression time of small coal pillar is mainly in the roof periodic weighting period, the key area of air leakage is 20 m miles behind the support; the advance influence range of air leakage of small coal pillar is about 135 m, and this part of coal can effectively prevent coal spontaneous combustion by installing temperature sensors or gas monitoring in advance.

  • 关键词

    煤自燃小煤柱SF6示踪气体漏风规律漏风区域

  • KeyWords

    coal spontaneous combustion;small pillar;SF6 tracer gas;air leakage law;air leakage area

  • 基金项目(Foundation)
    国家自然科学基金区域创新发展联合基金资助项目(U23A20601)
  • DOI
  • 引用格式
    孙珍平,刘啸,潘陶. 小煤柱工作面随采过程中相邻采空区遗煤自燃特性研究[J]. 煤矿安全,2025,56(2):102−108.
  • Citation
    SUN Zhenping, LIU Xiao, PAN Tao. Study on spontaneous combustion characteristics of residual coal in adjacent goaf during mining of small coal pillar working face[J]. Safety in Coal Mines, 2025, 56(2): 102−108.
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  • 图表
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    • SF6测漏风装置示意图

    图(5) / 表(3)

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