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淮北许疃矿构造煤孔隙结构及压敏效应

董夔 贾建称 巩泽文 吴艳

董夔, 贾建称, 巩泽文, 吴艳. 淮北许疃矿构造煤孔隙结构及压敏效应[J]. 煤田地质与勘探, 2019, 47(2): 58-65. doi: 10.3969/j.issn.1001-1986.2019.02.010
引用本文: 董夔, 贾建称, 巩泽文, 吴艳. 淮北许疃矿构造煤孔隙结构及压敏效应[J]. 煤田地质与勘探, 2019, 47(2): 58-65. doi: 10.3969/j.issn.1001-1986.2019.02.010
DONG Kui, JIA Jiancheng, GONG Zewen, WU Yan. Study on pore structure and pressure-sensitive effect of tectonic coal in Huaibei Xutuan mine[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(2): 58-65. doi: 10.3969/j.issn.1001-1986.2019.02.010
Citation: DONG Kui, JIA Jiancheng, GONG Zewen, WU Yan. Study on pore structure and pressure-sensitive effect of tectonic coal in Huaibei Xutuan mine[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(2): 58-65. doi: 10.3969/j.issn.1001-1986.2019.02.010

淮北许疃矿构造煤孔隙结构及压敏效应

doi: 10.3969/j.issn.1001-1986.2019.02.010
基金项目: 

国家科技重大专项任务(2016ZX05045-002-001)

详细信息
    第一作者:

    董夔,1989年生,女,山西晋中人,博士研究生,从事煤与煤层气地质与勘探开发研究.E-mail:dongkui1011@163.com

    通信作者:

    贾建称,1965年生,男,陕西丹凤人,研究员,博士生导师,从事煤与煤层气地质与勘探开发研究.E-mail:jianchengjia@163.com

  • 中图分类号: P618.13

Study on pore structure and pressure-sensitive effect of tectonic coal in Huaibei Xutuan mine

Funds: 

National Science and Technology Major Project(2016ZX05045-002-001))

  • 摘要: 为了探究构造煤的孔隙结构及压敏效应,采取淮北许疃矿煤样,利用扫描电子显微镜、压汞实验、含瓦斯煤热流固耦合三轴伺服渗流装置进行相关参数测试,研究构造煤的孔隙结构以及有效应力对煤样渗透率渗透系数的影响。实验结果表明:碎裂结构煤裂隙规则、平直,连通性较好;原生结构煤中主要以微孔为主,构造煤中以微孔和过渡孔占主导。韧性变形系列构造煤的有效应力与渗透率呈抛物线关系;有效应力小于4 MPa时,煤体渗透率敏感性显著,大于4 MPa时其渗透率敏感性弱。该趋势是有效应力和解吸效应共同作用的结果;由于解吸和有效围压的共同作用,渗透率存在最小值。与沁水盆地相比,许疃矿煤样部分渗透率损害系数较高。

     

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  • 收稿日期:  2019-01-05
  • 发布日期:  2019-04-25

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