留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

煤层底板断层抗渗性能“三孔”原位测试与评价

戴磊 段李宏

戴磊,段李宏. 煤层底板断层抗渗性能“三孔”原位测试与评价[J]. 工矿自动化,2022,48(5):128-132.  doi: 10.13272/j.issn.1671-251x.2021110018
引用本文: 戴磊,段李宏. 煤层底板断层抗渗性能“三孔”原位测试与评价[J]. 工矿自动化,2022,48(5):128-132.  doi: 10.13272/j.issn.1671-251x.2021110018
DAI Lei, DUAN Lihong. 'Three hole' in-situ test and evaluation of fault impermeability of coal seam floor[J]. Journal of Mine Automation,2022,48(5):128-132.  doi: 10.13272/j.issn.1671-251x.2021110018
Citation: DAI Lei, DUAN Lihong. "Three hole" in-situ test and evaluation of fault impermeability of coal seam floor[J]. Journal of Mine Automation,2022,48(5):128-132.  doi: 10.13272/j.issn.1671-251x.2021110018

煤层底板断层抗渗性能“三孔”原位测试与评价

doi: 10.13272/j.issn.1671-251x.2021110018
基金项目: 国家自然科学基金资助项目(U1710253)。
详细信息
    作者简介:

    戴磊(1972—),男,河南永城人,高级工程师,主要从事地测防治水相关工作,E-mail:dailei6688@yeah.net

  • 中图分类号: TD745

"Three hole" in-situ test and evaluation of fault impermeability of coal seam floor

  • 摘要: 针对“双孔”法现场压渗测试技术采用单一方向的压渗测试,未考虑岩层裂隙的方向和各向异性特点,导致结果与复杂岩层多向受压的实际情况有较大差异的问题,采用“三孔”法现场压渗试验方法,分别对城郊煤矿二水平煤层FN-6正断层进行了正向、反向压水试验。在典型巷道布置3个钻孔分别用于注水和监测水压,第1次压水试验为正向压水试验,第2次压水试验为反向压水试验。将水压监测孔水压和压渗流量明显随注水水压同步变化的点作为起始渗透特征点,对应的注水水压确定为起始导渗水压力,若注水水压按照设计值持续增大,测渗水压较注水水压小且保持稳定,注水流量相对稳定,则表明在原始状态下,现场岩层的抗渗能力极强,为隔水层,反之为导水裂隙。正向压水试验表明:在初始状态下FN-6正断层上段的导水能力极其微弱,属于隔水层;随着注水水压升高,压水孔和水压监测孔间的岩体密集发生劈裂产生了裂隙,但规模较小,导水能力较弱,仅以微小裂隙的渗流为主。在反向压水试验过程中,导水通道数量较正向压水试验时有所增加,导致压水孔和水压监测孔间的压差降低,在水压监测孔和压水孔间形成了优势导水通道,只有超过临界导渗水压(FN-6正断层的临界导渗水压为11 MPa)时才能形成实际的渗流状态。

     

  • 图  1  钻孔压水试验装置与原理

    Figure  1.  Drilling water pressure test device and principle

    图  2  断层原位压水试验钻孔布设

    Figure  2.  Hole layout in fault in-situ pressurized water test

    图  3  正向压水试验的压渗曲线

    Figure  3.  Pressure-permeability curves of forward water pressure test

    图  4  反向压水试验的压渗曲线

    Figure  4.  Pressure-permeability curves of reverse water pressure test

  • [1] 宋文成,梁正召,刘伟韬,等. 采场底板破坏特征及稳定性理论分析与试验研究[J]. 岩石力学与工程学报,2019,38(11):2208-2218.

    SONG Wencheng,LIANG Zhengzhao,LIU Weitao,et al. Theoretical analysis and experimental investigation on failure characteristics and stability of stope floors[J]. Chinese Journal of Rock Mechanics and Engineering,2019,38(11):2208-2218.
    [2] 段李宏,张金陵. 城郊煤矿二水平煤层底板突水危险性综合评价研究[J]. 煤炭工程,2021,53(1):128-132.

    DUAN Lihong,ZHANG Jinling. Comprehensive risk assessment of water inrush from coal seam floor for No.2 mining level in Chengjiao Coal Mine[J]. Coal Engineering,2021,53(1):128-132.
    [3] 刘泽威,刘其声,刘洋. 煤层底板隐伏断层分类及突水防治措施[J]. 煤田地质与勘探,2020,48(2):141-146. doi: 10.3969/j.issn.1001-1986.2020.02.022

    LIU Zewei,LIU Qisheng,LIU Yang. Classification of hidden faults in coal seam floor and measures for water inrush prevention[J]. Coal Geology & Exploration,2020,48(2):141-146. doi: 10.3969/j.issn.1001-1986.2020.02.022
    [4] 慕松利,张二蒙,赵霖,等. 赵固二矿工作面断层突水防治技术[J]. 煤矿安全,2019,50(12):64-68.

    MU Songli,ZHANG Ermeng,ZHAO Lin,et al. Comprehensive prevention and control techniques for water inrush from faults in Zhaogu No.2 Coal Mine[J]. Safety in Coal Mines,2019,50(12):64-68.
    [5] 张世威,王文,杜伟升. 带压开采底板突水预测研究[J]. 煤炭工程,2021,53(5):125-130.

    ZHANG Shiwei,WANG Wen,DU Weisheng. Prediction of floor water inrush in compensated mining[J]. Coal Engineering,2021,53(5):125-130.
    [6] 李彦民,周晨阳,李凤莲. 基于代价敏感理论的多决策树煤层底板突水预测模型[J]. 工矿自动化,2020,46(12):76-83.

    LI Yanmin,ZHOU Chenyang,LI Fenglian. Multi-decision tree prediction model for coal seam floor water inrush based on cost-sensitive theory[J]. Industry and Mine Automation,2020,46(12):76-83.
    [7] 朱光丽,张文泉,张贵彬,等. 采动诱发断层活化导水试验研究[J]. 岩土力学,2017,38(11):3163-3172.

    ZHU Guangli,ZHANG Wenquan,ZHANG Guibin,et al. Experimental study on fault activation conducting water inrush[J]. Rock and Soil Mechanics,2017,38(11):3163-3172.
    [8] 张保良,郭惟嘉,张新国,等. 煤层开采底板承压水导升模拟试验系统研制与应用[J]. 煤炭学报,2016,41(8):2057-2062.

    ZHANG Baoliang,GUO Weijia,ZHANG Xinguo,et al. Development and application of analogue testing system for floor confined water rise in coal mining[J]. Journal of China Coal Society,2016,41(8):2057-2062.
    [9] 袁世冲,张改玲,郑国胜,等. 斜井穿越风积砂层水砂突涌注浆治理研究[J]. 煤炭学报,2018,43(4):1104-1110.

    YUAN Shichong,ZHANG Gailing,ZHENG Guosheng,et al. Grouting treatment of water and sand inrush into an inclined shaft in aeolian sand layer[J]. Journal of China Coal Society,2018,43(4):1104-1110.
    [10] 杨文凯,孙文洁,刘阳,等. 我国矿井水害评价预测方法及其展望[J]. 煤炭技术,2019,38(4):115-117.

    YANG Wenkai,SUN Wenjie,LIU Yang,et al. Method and prospect of prediction and evaluation of mine water disaster in China[J]. Coal Technology,2019,38(4):115-117.
    [11] 孙晓倩,张冬,张新武,等. 基于压水试验的深部煤层底板岩层阻渗性能研究[J]. 中国煤炭,2014,40(11):93-97. doi: 10.3969/j.issn.1006-530X.2014.11.030

    SUN Xiaoqian,ZHANG Dong,ZHANG Xinwu,et al. Study on permeability barrier performance of deep coal seam floor based on packer permeability test[J]. China Coal,2014,40(11):93-97. doi: 10.3969/j.issn.1006-530X.2014.11.030
    [12] 刘瑞新,曹丁涛,胡东祥. 基于原位实测的下组煤底板岩层阻渗性研究[J]. 水文地质工程地质,2016,43(1):105-110.

    LIU Ruixin,CAO Dingtao,HU Dongxiang. A study of the impermeability of the lower coal seam floor rocks at the Yanzhou coalfield based on in-situ test[J]. Hydrogeology & Engineering Geology,2016,43(1):105-110.
    [13] 邵明喜,官云章,曹思文,等. 基于压水试验的杨村煤矿底板断层带渗流性质研究[J]. 矿业安全与环保,2016,43(1):73-76,80. doi: 10.3969/j.issn.1008-4495.2016.01.019

    SHAO Mingxi,GUAN Yunzhang,CAO Siwen,et al. Research on seepage characteristics of floor fault zone based on water injection test in Yangcun Coal Mine[J]. Mining Safety & Environmental Protection,2016,43(1):73-76,80. doi: 10.3969/j.issn.1008-4495.2016.01.019
    [14] QIAN Ziwei,WU Huilei. The in situ hydraulic properties of fault zones in mine roadway floor[J]. Arabian Journal of Geosciences,2019,12(18):577. doi: 10.1007/s12517-019-4745-x
  • 加载中
图(4)
计量
  • 文章访问数:  144
  • HTML全文浏览量:  21
  • PDF下载量:  25
  • 被引次数: 0
出版历程
  • 收稿日期:  2021-11-08
  • 修回日期:  2022-04-25
  • 网络出版日期:  2022-03-05

目录

    /

    返回文章
    返回