Volume 48 Issue 8
Aug.  2022
Turn off MathJax
Article Contents
Article Navigation >  Journal of Mine Automation  > 2022  >  48(8): 56-61, 121
HOU Junhua. Research on the deformation and failure depth of the floor in fully mechanized top coal caving of extra-thick seam[J]. Journal of Mine Automation，2022，48(8)：56-61, 121.  doi: 10.13272/j.issn.1671-251x.2022050021
Citation: HOU Junhua. Research on the deformation and failure depth of the floor in fully mechanized top coal caving of extra-thick seam[J]. Journal of Mine Automation，2022，48(8)：56-61, 121.  doi: 10.13272/j.issn.1671-251x.2022050021
shu

Research on the deformation and failure depth of the floor in fully mechanized top coal caving of extra-thick seam

doi: 10.13272/j.issn.1671-251x.2022050021

  • Zhaolou Coal Mine, Yanzhou Coal Mining Heze Energy Chemical Co., Ltd., Yuncheng 272400, China

  • Received Date: 2022-05-07
  • Rev Recd Date: 2022-08-09
    • Available Online: 2022-06-27
    Abstract
  • In order to explore the deformation and failure depth of the floor under the condition of fully mechanized top coal caving of extra-thick coal seam, this paper takes 1305 working face of Dongtan Coal Mine of Yankuang Energy Group Co., Ltd. as the background. The deformation and failure depth of the floor in the mining coal seam of the working face is comprehensively analyzed by using field measurement, numerical simulation and theoretical calculation. The field measurement results using the strain induction method and borehole imaging technology show the following results. The floor is affected by mining ground pressure, and there are obvious characteristics in horizontal and vertical directions. In the horizontal direction, the position near the advanced support measuring point of 50 m and at the depth of 10 m in the shallow part of the floor starts to be affected by the mining ground pressure. After the working face is pushed over a certain distance, the deformation and failure of the floor are severe. The variation range of crossover distance and lag distance in the horizontal direction of different depths of the floor is 96-115 m and 48-52 m respectively. The deformation and failure depth of the floor in fully mechanized top coal caving of the working face is 16-20 m. The floor rock below the vertical depth of 20 m is mainly elastic deformation. The distribution characteristics of the plastic zone in different depths of the floor by numerical simulation show that the farther the distance from the working face floor is, the smaller the influence of mining pressure is, and the smaller the range of the plastic zone is. The 20 m under the floor is basically not damaged. The result of the theoretical calculation confirms that the deformation and failure depth of the floor is 19.2 m. Based on the results of field measurement, numerical simulation and theoretical calculation, the deformation and failure depth of the floor in 1305 working face is less than 20 m. The research results can provide the quantitative basis for the prevention and control of floor water disasters in fully mechanized top coal caving of extra-thick coal seams.

     

    • FullText(HTML)
  • loading
    • References(15)
  • [1]
    国家煤矿安全监察局. 煤矿防治水细则[M]. 北京: 煤炭工业出版社, 2018.

    State Administration of Coal Mine Safety. Rules for water prevention and control in coal mines[M]. Beijing: China Coal Industry Publishing House, 2018.
    [2]
    尹尚先,连会青,徐斌,等. 深部带压开采:传承与创新[J]. 煤田地质与勘探,2021,49(1):170-181. doi: 10.3969/j.issn.1001-1986.2021.01.018

    YIN Shangxian,LIAN Huiqing,XU Bin,et al. Deep mining under safe water pressure of aquifer:inheritance and innovation[J]. Coal Geology & Exploration,2021,49(1):170-181. doi: 10.3969/j.issn.1001-1986.2021.01.018
    [3]
    刘杰. 特厚煤层综放工作面围岩运动的微地震监测[J]. 矿业安全与环保,2008,35(1):44-46. doi: 10.3969/j.issn.1008-4495.2008.01.016

    LIU Jie. Microseismic monitoring of surrounding rock movement in fully mechanized caving face of extra thick coal seam[J]. Minging Safety & Environmental Protection,2008,35(1):44-46. doi: 10.3969/j.issn.1008-4495.2008.01.016
    [4]
    朱术云,曹丁涛,岳尊彩,等. 特厚煤层综放采动底板变形破坏规律的综合实测[J]. 岩土工程学报,2012,34(10):1931-1938.

    ZHU Shuyun,CAO Dingtao,YUE Zuncai,et al. Comprehensive measurement of characteristics of deformation and failure of extra-thick coal seam floor induced by fully mechanized top-coal mining[J]. Chinese Journal of Geotechnical Engineering,2012,34(10):1931-1938.
    [5]
    王一栋,姜振泉,朱术云,等. 特厚煤层采动底板变形破坏的数值模拟与实测对比[J]. 煤矿安全,2012,43(10):35-37. doi: 10.13347/j.cnki.mkaq.2012.10.015

    WANG Yidong,JIANG Zhenquan,ZHU Shuyun,et al. Contrast of numerical simulation and field measurement on deformation and failure in thick seam mining floor[J]. Safety in Coal Mines,2012,43(10):35-37. doi: 10.13347/j.cnki.mkaq.2012.10.015
    [6]
    李进军,李怀宾,顾合龙. 厚煤层承压水上开采底板破坏规律数值模拟研究[J]. 煤炭技术,2015,34(2):109-111.

    LI Jinjun,LI Huaibin,GU Helong. Numerical simulation research on damage of thick coal seam mining above confined water on floor[J]. Coal Technology,2015,34(2):109-111.
    [7]
    杨本水,黄天缘,宣以琼,等. 特厚煤层综放开采底板破坏及阻隔水性能分析[J]. 安徽建筑大学学报,2019,27(3):28-33.

    YANG Benshui,HUANG Tianyuan,XUAN Yiqiong,et al. Bottom destruction and barrier performance analysis of fully mechanized caving mining in extra-thick coal seam[J]. Journal of Anhui Jianzhu University,2019,27(3):28-33.
    [8]
    范红伟,杨涛. 近距离特厚煤层采动影响下底板破坏及巷道稳定性研究[J]. 矿业研究与开发,2021,41(5):107-112.

    FAN Hongwei,YANG Tao. Research on floor failure and roadway stability under the influence of mining in near-distance extra-thick coal seam[J]. Mining Research and Development,2021,41(5):107-112.
    [9]
    张郑伟. 特厚煤层综放开采对底板变形损伤的影响研究[J]. 同煤科技,2021(3):7-10.

    ZHANG Zhengwei. Study on influence of fully mechanized top coal caving mining on deformation and damage of floor in extra thick coal seam[J]. Datong Coal Science & Technology,2021(3):7-10.
    [10]
    陈洋. 大同矿区特厚煤层采动底板变形及破坏深度研究[D]. 徐州: 中国矿业大学, 2021.

    CHEN Yang. Study on deformation and failure depth of mining-induced floor of extra-thick coal seam in Datong Mining Area[D]. Xuzhou: China University of Mining and Technology, 2021.
    [11]
    高银贵,孔皖军,陈永春,等. 特厚煤层综放开采下工作面底板岩层破坏特征[J]. 能源环境保护,2021,35(6):68-75. doi: 10.3969/j.issn.1006-8759.2021.06.010

    GAO Yingui,KONG Wanjun,CHEN Yongchun,et al. Study on the failure characteristics of the bottom slate layer in the working face of fully mechanized caving in ultra-thick coal seam[J]. Energy Environmental Protection,2021,35(6):68-75. doi: 10.3969/j.issn.1006-8759.2021.06.010
    [12]
    王升阳,张志巍. 厚煤层综放开采底板采动破坏及渗流特征[J]. 能源与节能,2022(4):10-14. doi: 10.3969/j.issn.2095-0802.2022.04.003

    WANG Shengyang,ZHANG Zhiwei. Mining failure and seepage characteristics of fully mechanized caving floor in thick coal seams[J]. Energy and Energy Conservation,2022(4):10-14. doi: 10.3969/j.issn.2095-0802.2022.04.003
    [13]
    郭国强. 综放开采特厚煤层采场底板破坏规律研究[J]. 煤田地质与勘探,2022,50(8):53-61. doi: 10.12363/issn.1001-1986.21.12.0774

    GUO Guoqiang. Floor failure law of extra-thick coal seam in fully mechanized caving mining[J]. Coal Geology & Exploration,2022,50(8):53-61. doi: 10.12363/issn.1001-1986.21.12.0774
    [14]
    于小鸽, 施龙青, 韩进, 等. 损伤底板破坏深度预测理论及应用[M]. 北京: 煤炭工业出版社, 2016.

    YU Xiaoge, SHI Longqing, HAN Jin, et al. Theory and application of failure depth prediction of damaged floor[M]. Beijing: China Coal Industry Publishing House, 2016.
    [15]
    钱鸣高, 石平五. 矿山压力与岩层控制[M]. 徐州: 中国矿业大学出版社, 2003.

    QIAN Minggao, SHI Pingwu. Mine pressure and rock control[M]. Xuzhou: China University of Mining and Technology Press, 2003.
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(7)  / Tables(3)

    Get Citation
    PDF
    XML

    Article Metrics

    Article views (221) PDF downloads(22) Cited by()
    Proportional views
    Related

    苏ICP备 05016349号-2

    Supported by: Beijing Renhe Information Technology Co. Ltd.  Visits：    

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return