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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
下保护层开采参数与保护效果定量关系研究
  • Title

    Study on quantitative relationship between mining parameters of lower protective layer and protection effect

  • 作者

    贺爱萍付华霍丙杰路洋波

  • Author

    HE Aiping,FU Hua,HUO Bingjie,LU Yangbo

  • 单位

    辽宁工程技术大学 安全科学与工程学院宁工程技术大学 应用技术与经济管理学院辽宁工程技术大学 电气与控制工程学院辽宁工程技术大学 矿业学院天地科技股份有限公司 开采设计事业部

  • Organization
    1.School of Safety Science and Engineering,Liaoning Technical University,Fuxin ,China; 2.School of Applied Technology and Economics Management,Liaoning Technical University,Fuxin ,China; 3.School of Electrical and Control Engineering,Liaoning Technical University, Fuxin,China;4.School of Mining,Liaoning Technical University,Fuxin ,China; 5.Department of Mining and Design, Tiandi Science and Technology Company Limited,Beijing ,China
  • 摘要

    保护效果分析是保护层开采工程中开采参数确定和卸压瓦斯抽采方案设计等环节的重要依据。为了分析下保护层开采过程中不同开采参数对被保护层保护效果的影响,应用数据统计分析法研究了下保护层开采参数与保护效果的定量关系,并应用数值模拟方法进行了验证分析。通过统计分析16个下保护层开采矿井的样本数据,确定保护层采高为1.5、2.0、3.0 m条件下随着相对层间距的变化,被保护层原岩应力、透气性系数及瓦斯压力等参数与保护层开采参数呈二次函数关系。COMSOL数值模拟方法揭示了保护层采高为1.5、2.0、3.0 m条件下,相对层间距为15、20、30和40倍时,被保护层透气性系数渗透率的增加倍数和原岩应力减小率随着采高和相对层间距的变化同样为二次函数关系。2种研究方法得到了一致的函数关系趋势,进一步表明数据统计分析法建立的开采参数与保护效果函数关系的科学性。

  • Abstract
    The analysis of protection effect is an important basis for the determination of mining parameters and the design of pressure relief gas drainage scheme in the protective layer mining project. In order to analyze the influence of different mining parameters on the protection effect of the protective layer during the mining process, the mathematical relationship between the mining parameters and the protection effect of the lower protective layer was studied by using statistical analysis method, and the numerical simulation method was applied to verify the analysis. Based on the statistical analysis of the sample data of 16 lower protective seam mining mines, it is determined that the protective seams at mining heights of 1.5, 2.0 and 3.0 m with the change of relative interval, the parameters of the original rock stress, permeability coefficient and gas pressure of the protective seam have a quadratic function relationship with the mining parameters of the protective seam. The COMSOL numerical simulation method reveals that when the protective layer has a height of 1.5, 2.0, 3.0 m and the relative layer spacing is 15, 20, 30 and 40 times, the permeability coefficient of the protective layer is increased and the original rock stress is reduced. The two research methods have obtained the same trend of functional relationship,and further indicated that scientific nature of the relationship between mining parameters and protection effect functions established by statistical analysis.
  • 关键词

    保护层开采保护效果数据统计透气性开采参数

  • KeyWords

    mining of protective layer; protective effect; statistical analysis of data;breathability;mining parameters

  • 基金项目(Foundation)
    国家自然科学基金资助项目(51504127);辽宁省煤炭资源安全开采与洁净利用工程研究中心开放基金资助项目(LNTU17KF06)
  • 相关文章
  • 图表
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    • 不同保护层采高原岩应力和渗透性系数随相对层间距的变化关系

    图(7) / 表(0)

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