Volume 47 Issue 12
. 
Turn off MathJax
Article Contents
Article Navigation >  Journal of Mine Automation  > 2021  >  47(12): 19-24
KONG Weiyi, ZHAO Heping, LIU Quanlin, et al. Spray sealing technology for gas extraction drilling[J]. Industry and Mine Automation, 2021, 47(12): 19-24. doi: 10.13272/j.issn.1671-251x.2021050022
Citation: KONG Weiyi, ZHAO Heping, LIU Quanlin, et al. Spray sealing technology for gas extraction drilling[J]. Industry and Mine Automation, 2021, 47(12): 19-24. doi: 10.13272/j.issn.1671-251x.2021050022
shu

Spray sealing technology for gas extraction drilling

doi: 10.13272/j.issn.1671-251x.2021050022
  • 1.

    Huajin Coking Coal Co., Ltd., Lvliang 033300, China;

  • 2.

    School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China

  • Received Date: 2021-05-11
  • Rev Recd Date: 2021-12-07
  • Publish Date: 2021-12-20
    Abstract
  • The sealing quality of extraction drilling is the key factor affecting gas extraction and outburst elimination. In order to solve the problems of poor quality of passive hole sealing, low gas concentration in drilling and extraction, and cumbersome process of active hole sealing, a spray sealing technology for gas extraction drilling is proposed. After the drilling construction is finished, a pneumatic deep-hole centrifugal spray cup type high-rotation speed spray nozzle is sent to the preset position of the drilling hole, and a hole sealing material preheating system is started at the same time. When the temperature of the spray type hole sealing material is stabilized at 70-80℃, a pneumatic suction pump is started to suck the sealing material, and the sealing material is mixed and sprayed out through the spray nozzle and solidified on the inner wall of the drilling hole. The four-quadrant slide structure system guides the nozzle to move from the bottom of the hole to the mouth of the hole to complete the spray-type sealing operation. Finally, the PVC plug of 2.0-3.0 m is fixed with the polyurethane foam material at the drilling hole, and then the extraction system is connected. The field application results show that the new spray sealing material has the advantages of liquid quick setting, good sealing performance, strong adhesion, flame retardant, high toughness and high strength, etc. It can react and solidify quickly in the gas extraction hole, and form a flame retardant sealing film with high strength and toughness. The use of spray sealing technology and equipment can realize automatic sealing of coal seam drilling. Compared with polyurethane sealing technology, the volume fraction of gas extraction after applying spraying-type sealing technology is increased by 19%, the cost of single-hole sealing is saved by 53%, and the sealing time of single-hole is saved by 50%.

     

    • FullText(HTML)
  • loading
    • References(17)
  • [1]
    国家能源局.煤层气(煤矿瓦斯)开发利用"十三五"规划[EB/OL].[2016-12-06].http://www.china-nengyuan.com/news/101872.html.

    National Energy Administration.The 13 th five-year plan for development and utilization of coalbed methane (coal gas)[EB/OL].[2016-12-06].http://www.china-nengyuan.com/news/101872.html.
    [2]
    李忠辉,王恩元,郑安琪,等.煤层瓦斯抽采钻孔变形破坏测试技术及其应用研究[J]. 煤炭科学技术,2020,48(10):37-44.

    LI Zhonghui,WANG Enyuan,ZHENG Anqi,et al. Research on testing technology of deformation and failure of boreholes in coal seam gas drainage and its application[J].Coal Science and Technology,2020,48(10):37-44.
    [3]
    袁亮.我国深部煤与瓦斯共采战略思考[J]. 煤炭学报,2016,41(1):1-6.

    YUAN Liang.Strategic thinking of simultaneous exploitation of coal and gas in deep mining[J].Journal of China Coal Society,2016,41(1):1-6.
    [4]
    周福宝,孙玉宁,李海鉴,等.煤层瓦斯抽采钻孔密封理论模型与工程技术研究[J].中国矿业大学学报,2016,45(3):433-439.

    ZHOU Fubao,SUN Yuning,LI Haijian,et al.Research on the theoretical model and engineering technology of the coal seam gas drainage hole sealing[J].Journal of China University of Mining and Technology,2016,45(3):433-439.
    [5]
    张超,杨朴超,李树刚,等.瓦斯抽采钻孔密封段防塌支护材料试验研究及现场应用[J].采矿与安全工程学报,2021,38(1):199-205.

    ZHANG Chao,YANG Puchao,LI Shugang,et al. Experimental research and field application of anti-sloughing support material in gas extraction borehole sealing section[J].Journal of Mining & Safety Engineering,2021,38(1):199-205.
    [6]
    翟成,向贤伟,余旭,等.瓦斯抽采钻孔柔性膏体封孔材料封孔性能研究[J].中国矿业大学学报,2013,42(6):982-988.

    ZHAI Cheng,XIANG Xianwei,YU Xu,et al.Sealing performance of flexible gel sealing material of gas drainage borehole[J].Journal of China University of Mining and Technology,2013,42(6):982-988.
    [7]
    张建华,李振兴.深部低透煤层瓦斯抽采钻孔封孔方式研究[J].能源与环保,2019,41(4):80-83.

    ZHANG Jianhua,LI Zhenxing.Study on sealing way of gas drainage borehole in deep low-permeability coal seam[J].China Energy and Environmental Protection,2019,41(4):80-83.
    [8]
    韩军军.煤矿瓦斯抽采钻孔主要封孔方式研究[J].能源与节能,2020(7):158-159.

    HAN Junjun.Study on the main sealing methods of gas drainage boreholes in coal mines[J].Energy and Energy Conservation,2020(7):158-159.
    [9]
    张宏图,李阳,姚邦华,等.瓦斯抽采钻孔封孔水泥砂浆黏度时变性扩散模型[J].煤炭科学技术,2020,48(10):52-59.

    ZHANG Hongtu,LI Yang,YAO Banghua,et al.Time-dependent viscosity diffusion model of cement mortar grouting for gas drainage borehole sealing[J].Coal Science and Technology,2020,48(10):52-59.
    [10]
    王鹏.提高围岩破碎区穿层钻孔抽采效果新技术与应用[J].煤炭技术,2019,38(2):85-88.

    WANG Peng.New technology and application of improving extraction effect of crossing hole in surrounding rock broken zone[J].Coal Technology, 2019,38(2):85-88.
    [11]
    周世勇."两堵一注"封孔装置在瓦斯抽采中的应用[J]. 能源技术与管理,2018,43(2):29-30.

    ZHOU Shiyong.Application of "two sealing and one injection" sealing device in gas drainage[J].Energy Technology and Management,2018,43(2):29-30.
    [12]
    徐宁武,孙炳兴."两堵一注"封孔工艺在银北矿区的应用研究[J].能源与环保,2019,41(8):11-14.

    XU Ningwu,SUN Bingxing.Application research of "two sealing and one injection" hole sealing technology in Yinbei Mining Area[J].China Energy and Environmental Protection,2019,41(8):11-14.
    [13]
    王世超,刘永茜.预制粉料充填封孔方法研究及应用[J]. 煤炭科学技术,2017,45(8):238-242.

    WANG Shichao,LIU Yongqian.Research and application of sealing method of prefabricated powder filling in drill hole[J].Coal Science and Technology, 2017,45(8):238-242.
    [14]
    周福宝,李金海,昃玺,等.煤层瓦斯抽放钻孔的二次封孔方法研究[J].中国矿业大学学报,2009,38(6):764-768.

    ZHOU Fubao,LI Jinhai,ZE Xi,et al.A Study of the second hole sealing method to improve gas drainage in coal seams[J].Journal of China University of Mining and Technology,2009,38(6):764-768.
    [15]
    刘南南,张春华,郝晋伟.煤层钻孔自适应动态密封技术及系统研究[J].资源开发与市场,2016,32(2):208-212.

    LIU Nannan,ZHANG Chunhua,HAO Jinwei.Research of adaptive dynamic sealing mechanism and system on borehole in coal seam[J].Resource Development & Market,2016,32(2):208-212.
    [16]
    翟成,仲超,徐吉钊,等.高瓦斯煤层瓦斯预抽钻孔动态封孔技术[J].煤矿安全,2015,46(3):222-225.

    ZHAI Cheng,ZHONG Chao,XU Jizhao,et al.Dynamic sealing technology for gas pre-drainage drilling holes in gassy coal seam[J].Safety in Coal Mines,2015,46(3):222-225.
    [17]
    张超,林柏泉,周延,等.本煤层近水平瓦斯抽采钻孔"强弱强"带压封孔技术研究[J].采矿与安全工程学报,2013,30(6):935-939.

    ZHANG Chao,LIN Baiquan,ZHOU Yan,et al. Strong-weak-strong borehole pressurized sealing technology for horizontal gas drainage borehole in mining seam[J].Journal of Mining & Safety Engineering,2013,30(6):935-939.
    • 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
    Get Citation
    PDF
    XML

    Article Metrics

    Article views (179) PDF downloads(16) 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