Volume 46 Issue 5
Oct.  2018
Turn off MathJax
Article Contents
Abstract
References
REN Bo, YUAN Liang, SANG Shuxun, GUO Hua, XUE Junhua, HUANG Huazhou, LI Yuan, WU Jie. Deformation and damage of pressure-relieved gas extraction wells in deep mining under thick surface soil and their prevention: With Guqiao of Huainan mine as an example[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(5): 159-166. DOI: 10.3969/j.issn.1001-1986.2018.05.025
Citation: REN Bo, YUAN Liang, SANG Shuxun, GUO Hua, XUE Junhua, HUANG Huazhou, LI Yuan, WU Jie. Deformation and damage of pressure-relieved gas extraction wells in deep mining under thick surface soil and their prevention: With Guqiao of Huainan mine as an example[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(5): 159-166. DOI: 10.3969/j.issn.1001-1986.2018.05.025
shu

Deformation and damage of pressure-relieved gas extraction wells in deep mining under thick surface soil and their prevention: With Guqiao of Huainan mine as an example

  • 1. State Key Laboratory of Deep Coal Mining & Environment Protection, Coal Mining National Engineering Technology Research Institute, Huainan 232000, China;

  • 2. School of Resource and Safety Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;

  • 3. Anhui University of Science & Technology, Huainan 232001, China;

  • 4. School of Resources and Geoscience, China University of Mining and Technology, Xuzhou 221008, China;

  • 5. The Commonwealth Scientific and Industrial Research Organization, PO Box 883, Kenmore, Queensland 4069, Australia;

  • 6. National Engineering Research Center for Coal Gas Control, Huainan 232000, China;

  • 7. Shanxi Jincheng Anthracite Coal Mining Group, Jincheng 048000, China

Funds: 

National Key R&D Program of China(2018YFC0808000)

More Information
  • Received Date: June 04, 2018
  • Published Date: October 24, 2018
    Graphical Abstract
    • Abstract
  • Based on the engineering practice of Guqiao coal mine, combining with the physical simulation experiment and field monitoring results, the deformation and damage failure of surface drilling for deep well pressure relief mining and their prevention in thick alluvium were studied. The results show that drilling damage is the key factor for the damage of ground pressure relief gas extraction. Under the influence of mining, the damage of the surface gas extraction well is mainly deformation and fault section, and the damage depth is different, mainly concentrated in the middle and lower part of the loose layer and the middle upper part of the rock. In the condition of well drilling and completion, the end hole position of the drilling well is arranged near the fault and "O"-type ring is more conducive to pressure relief gas drainage. The overlying strata separation, stress concentration, vertical breakage and the "lever effect" caused by the overlying strata caused the destruction of the surface gas extraction well, and this phenomenon occurs from the bottom to the top many times, which is the main cause of the deformation and damage of the surface wells. The influence of coal mining on the stress of roadway and roof in front of the working face can reach 320 meters and 350 meters respectively, the influence of relative displacement on the track can reach 50m in front of the working face and 200m in the rear. The relative displacement in the middle of the stope is much larger than that at the edge of the stope, which is more likely to lead to drilling damage. By optimizing the well structure, improving the cement-completion construction technology and reasonable well location layout, it can effectively prevent the deformation and damage of the surface drilling in pressure relief mining and achieve stable and efficient gas extraction.
    • FullText(HTML)
    • References (19)
  • [1]
    袁亮. 高瓦斯矿区复杂地质条件安全高效开采关键技术[J]. 煤炭学报,2016,41(2):174-178.

    YUAN Liang. Key technique to high efficiency and safe mining in highly gassy mining atea with comples geologic condition[J]. Journal of China Coal Society,2016,41(2):174-178.
    [2]
    桑树勋,秦勇,姜波,等. 淮南地区煤层气地质研究与勘探开发潜势[J]. 天然气工业,2001,29(4):19-22.

    SANG Shuxun,QIN Yong,JIANG Bo,et al. Studies on coalbed methane geology and potential for exploration and development in Huainan area[J]. Natural Gas Industry,2001,29(4):19-22.
    [3]
    赵干,廖斌琛. 淮南矿区煤层气开发利用现状及展望[J]. 中国煤层气,2007,4(4):12-15.

    ZHAO Gan,LIAO Binchen. Current satus and prospect of CMM development and utilization in Huainan coal mining atea[J]. China Coalbed Methane,2007,4(4):12-15.
    [4]
    袁亮. 淮南矿区现代采矿关键技术[J]. 煤炭学报,2007,32(1):8-12.

    YUAN Liang. Key technology for modern mining in Huainan coal area[J]. Journal of China Coal Society,2007,32(1):8-12.
    [5]
    HAN Jiazhang,SANG Shuxun,CHENG Zhizhong,et al. Exploitation technology of pressure relief coal bed methane in vertical surface wells in the Huainan coal mining area[J]. Mining Science and Technology,2009,19(1):25-30.
    [6]
    梁运培. 淮南矿区地面钻井抽采瓦斯技术实践[J]. 采矿与安全工程学报,2007,24(4):409-413.

    LIANG Yunpei. Practice of methane drainage by surface well drilling in huainan mining area[J]. Journal of Mining & Safety Engineering,2007,24(4):409-413.
    [7]
    LIU Yuzhou,LI Xiaohong. Safety analysis of stability of surface gas drainage boreholes above goaf areas[J]. Journal of Coal Science & Engineering,2007,13(2):149-153.
    [8]
    焦先军. 淮南潘谢矿区地面钻井卸压瓦斯抽采技术及应用研究[D]. 徐州:中国矿业大学,2009.
    [9]
    徐宏杰,桑树勋,韩家章,等.岩体结构与地面瓦斯抽采井稳定性的关系[J]. 采矿与安全工程学报,2011,28(1):90-95.

    XU Hongjie,SANG Shuxun,HAN Jiazhang,et al. Relationship between rock mass structure and stability of surface well for released coal gas[J]. Journal of Mining & Safety Engineering, 2011,28(1):90-95.
    [10]
    黄华州. 远距离被保护层卸压煤层气地面井开发地质理论及其应用研究-以淮南矿区为例[D]. 徐州:中国矿业大学,2010.
    [11]
    徐宏杰,桑树勋,黄华州,等,煤矿区卸压瓦斯地面井破坏机理研究[J]. 水文地质工程地质,2014,41(6):122-127.

    XU Hongjie,SANG Shuxun,HUANG Huazhou,et al. Geological mechanism of failure surface vertical boreholes for relieved methane drainage in coal mining area[J]. Hydrogeology & Engineering Geology,2014,41(6):122-127.
    [12]
    武杰. 淮南矿区卸压煤层气地面直井开发井孔稳定性研究[D]. 徐州:中国矿业大学,2010.
    [13]
    SUN Haitao,HU Qianting,HUANG Shengshu. Model on surface borehole squeezing deformation fracture[J]. Journal of Coal Science & Engineering,2009,15(3):304-307.
    [14]
    殷禹宇. 淮南矿区煤层气资源量预算及有利区块预测评价[D]. 淮南:安徽理工大学,2016.
    [15]
    袁亮,郭华,沈宝堂,等. 低透气性煤层群煤与瓦斯共采中的高位环形裂隙体[J]. 煤炭学报,2011,36(3):357-365.

    YUAN Liang,GUO Hua,SHEN Baotang,et al. Circular overlying zone at longwall panel for efficient methane capture of mutiple coal seams with low permeability[J]. Journal of China Coal Society,2011,36(3):357-365.
    [16]
    钱鸣高,石平五,许家林. 矿山压力与岩层控制[M]. 徐州:中国矿业大学出版社,2010.
    [17]
    李日富,梁运培,程国强. 采空区覆岩走向水平移动机理研究[J]. 煤矿安全,2008,39(4):8-11.

    LI Rifu,LIANG Yunpei,CHENG Guoqiang. Study on law of strike horizontal displacement about overburden of goaf[J]. Safety in Coal Mines,2008,39(4):8-11.
    [18]
    袁亮. 煤与瓦斯共采[M]. 徐州,中国矿业大学出版社,2016:29-38.
    [19]
    李源,苏明金. 采动区瓦斯地面抽采钻井结构与布井优化设计[J]. 煤矿安全,2015,46(4):152-158.

    LI Yuan,SU Mingjin. Optimization design of well structure and drilling arrangement of surface gas drainage in mining area[J]. Safety in Coal Mines,2015,46(4):152-158.
    • Related Articles

  • Cited by

    Periodical cited type(3)

    1. 王军. 基于采空区地面井抽采数据评估煤矿卸压开采性能研究. 山西化工. 2024(08): 223-225 .
    2. 余岩，王传兵，徐燕飞，袁本庆. 工作面上覆风化带岩层地面注浆加固效果分析. 煤炭工程. 2021(05): 68-73 .
    3. 李军军，李国富，郝海金，郝春生，王争. 过采空区抽采下组煤煤层气技术及工程应用初探——以晋城寺河井田为例. 煤田地质与勘探. 2021(04): 96-104 . 本站查看

    Other cited types(4)

Catalog

    Get Citation
    PDF
    XML

    Article Metrics

    Article views (84) PDF downloads (7) Cited by(7)
    Related

    Copyright of website design © Editorial Office of Coal Geology & Exploration 陕ICP备05001372号-6 陕公网安备 61019002002193号

    Address: Editorial Office of Coal Geology & Exploration, No.82 Jinye 1st Rd, High-Tech Zone, Xi'an City, Shaanxi, China

    Tel: 029-81778075 E-mail: ccrimtdzykt@vip.163.com

    Supported by: Beijing Renhe Information Technology Co., Ltd.  Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return