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跨工作面采空区瓦斯抽采技术研究

李乾荣 王兆丰 王树军 安丰华 田兴润

李乾荣,王兆丰,王树军,等. 跨工作面采空区瓦斯抽采技术研究[J]. 工矿自动化,2023,49(5):90-95, 146.  doi: 10.13272/j.issn.1671-251x.2022080062
引用本文: 李乾荣,王兆丰,王树军,等. 跨工作面采空区瓦斯抽采技术研究[J]. 工矿自动化,2023,49(5):90-95, 146.  doi: 10.13272/j.issn.1671-251x.2022080062
LI Qianrong, WANG Zhaofeng, WANG Shujun, et al. Research on gas extraction technology in goaf across working face[J]. Journal of Mine Automation,2023,49(5):90-95, 146.  doi: 10.13272/j.issn.1671-251x.2022080062
Citation: LI Qianrong, WANG Zhaofeng, WANG Shujun, et al. Research on gas extraction technology in goaf across working face[J]. Journal of Mine Automation,2023,49(5):90-95, 146.  doi: 10.13272/j.issn.1671-251x.2022080062

跨工作面采空区瓦斯抽采技术研究

doi: 10.13272/j.issn.1671-251x.2022080062
基金项目: 国家自然科学基金资助项目(52074107)。
详细信息
    作者简介:

    李乾荣(1998—),男,山西长治人,硕士研究生,研究方向为瓦斯地质与瓦斯治理,E-mail:798003014@qq.com

  • 中图分类号: TD712

Research on gas extraction technology in goaf across working face

  • 摘要: Y型通风连续回采工作面采用沿空留巷技术提高煤炭采出率,随着工作面回采,采空区会扩大、连通,回风隅角和挡矸架内风流不畅,瓦斯不仅容易积聚,还很难稀释吹散,导致超限报警频繁。目前针对回风隅角和挡矸架内瓦斯积聚问题的解决方案,无法实现对采空区的持续抽采,且抽采能力较为分散,难以保证治理效果。针对Y型通风连续回采工作面采空区瓦斯治理难题,以东峰煤矿3202工作面为工程背景,提出一种跨工作面采空区瓦斯抽采技术。在相邻工作面的回风巷内施工定向长钻孔至采空区顶板断裂带,定向长钻孔抽采管路在工作面回采后无需撤管,可持续抽采采空区瓦斯,最大限度降低采空区及其顶板断裂带瓦斯存量,形成跨工作面,对采空区瓦斯进行抽采,减少了相邻采空区积聚瓦斯,有效防止顶板大面积垮落时采空区瓦斯突然扇出带来的瓦斯灾害。试验结果表明:跨工作面钻孔距离巷道顶板30~40 m,跨工作面定向长钻孔终孔位置在水平方向上距轨道巷20~40 m时抽采效果理想;施工定向长钻孔至采空区顶板断裂带,持续抽采采空区瓦斯,挡矸架内的瓦斯体积分数由0.67%降至0.22%,回风流瓦斯体积分数由0.47%降至0.18%,回采期间3202工作面瓦斯体积分数保持在0.6%以下。跨工作面采空区瓦斯抽采技术为采空区的瓦斯抽采方式提供了新思路。

     

  • 图  1  沿空留巷连续回采工作面新老采空区瓦斯勾连涌出

    Figure  1.  Gas gushing in the new and old goaf in continuous working face of gob-side entry retaining

    图  2  高位钻孔抽采瓦斯体积分数

    Figure  2.  Gas volume fraction extracted from high boreholes

    图  3  3201工作面高位钻孔抽采量变化

    Figure  3.  Change of extraction amount of high borehole in 3201 working face

    图  4  Y型通风工作面钻孔抽采布置

    Figure  4.  Borehole extraction arrangement of Y-type ventilation working face

    图  5  抽采瓦斯体积分数和纯量随时间变化曲线

    Figure  5.  Change curve with time of volume fraction and pure volume of extracted gas

    图  6  回采期间瓦斯体积分数变化曲线

    Figure  6.  Change curve of gas volume fraction during mining

    表  1  高位抽采钻孔布置参数表

    Table  1.   Layout parameters of high level extraction boreholes


    开孔高度/m孔深/m方位角/(°)终孔层位高度/m钻孔内错距离/m
    146392864035
    1−145613253830
    245732743528
    2−145103543025
    下载: 导出CSV
  • [1] 刘秀保,逄锦伦,范彦阳,等. 顶板走向高位长钻孔分源抽采采空区瓦斯技术研究与应用[J]. 矿业安全与环保,2019,46(5):70-74.

    LIU Xiubao,PANG Jinlun,FAN Yanyang,et al. Research and application of gas extraction technology in goaf byseparate sources in roof strike high-level long borehole[J]. Mining Safety & Environmental Protection,2019,46(5):70-74.
    [2] 范春阳. 桃园矿Ⅱ8221工作面高位定向长钻孔瓦斯抽采技术研究[D]. 淮南: 安徽理工大学, 2019.

    FAN Chunyang. Study on gas drainage technology of high directional long holes in Ⅱ8221 working face of Taoyuan Mine[D]. Huainan: Anhui University of Science & Technology, 2019.
    [3] 王海东,王哲. 近距煤层群高瓦斯矿井采空区大直径钻孔抽采瓦斯技术研究[J]. 煤炭技术,2018,37(5):149-151.

    WANG Haidong,WANG Zhe. Study on large diameter drilling of high gas cubic drainage technology in contiguous seams[J]. Coal Technology,2018,37(5):149-151.
    [4] 马向兵. 低−中−高位钻孔采空区瓦斯抽采技术实践[J]. 山东煤炭科技,2017(11):49-51.

    MA Xiangbing. On the practice of gas extraction in low-middle-high hole drilling zone[J]. Shandong Coal Science and Technology,2017(11):49-51.
    [5] 韩彦龙. 保护层沿空留巷Y型通风及卸压瓦斯抽采技术研究[D]. 阜新: 辽宁工程技术大学, 2017.

    HAN Yanlong. Research on Y type ventilation and gas relief drainage technology in protective layer[D]. Fuxin: Liaoning Technical University, 2017.
    [6] 薛彦平. 超大直径钻孔采空区瓦斯抽采技术研究及应用[J]. 煤炭技术,2021,40(8):123-126.

    XUE Yanping. Research and application of goaf gas drainage technology with super large diameter borehole[J]. Coal Technology,2021,40(8):123-126.
    [7] 孙荣军,李泉新,方俊,等. 采空区瓦斯抽采高位钻孔施工技术及发展趋势[J]. 煤炭科学技术,2017,45(1):94-99,213.

    SUN Rongjun,LI Quanxin,FANG Jun,et al. Construction technology and development tendency of high level borehole for gas drainage in goaf[J]. Coal Science and Technology,2017,45(1):94-99,213.
    [8] 许石青,余婕,田世祥,等. 采空区瓦斯高位定向长钻孔抽采技术研究[J]. 矿业研究与开发,2021,41(4):27-31.

    XU Shiqing,YU Jie,TIAN Shixiang,et al. Study on gas drainage technology of high-location directional long drilling in goaf[J]. Mining Research and Development,2021,41(4):27-31.
    [9] 邹炜. 腾晖矿大孔径钻孔瓦斯抽采技术研究及应用[J]. 煤炭技术,2020,39(5):140-142.

    ZOU Wei. Research and application of gas extraction technology in large hole of Tenghui Mine[J]. Coal Technology,2020,39(5):140-142.
    [10] 年军,李润芝,刘浩,等. 腾晖煤业采空区顶板超长定向钻孔模拟与应用研究[J]. 中国安全生产科学技术,2019,15(7):87-93.

    NIAN Jun,LI Runzhi,LIU Hao,et al. Study on simulation and application of roof super-long directional borehole in goaf of Tenghui Coal Industry[J]. Journal of Safety Science and Technology,2019,15(7):87-93.
    [11] 罗如强. 超大直径钻孔大流量抽采采空区瓦斯技术在马兰矿的应用[D]. 北京: 煤炭科学研究总院, 2018.

    LUO Ruqiang. Application of super large diameter borehole and large flow gas extraction technology in goaf in Malan Mine[D]. Beijing: China Coal Research Institute, 2018.
    [12] 宋志新. 顶板走向高位钻孔在采空区瓦斯治理中的应用[J]. 现代商贸工业,2016,37(34):484-485.

    SONG Zhixin. Application of high top slab drilling in gas control in goaf[J]. Modern Business Trade Industry,2016,37(34):484-485.
    [13] 金兆生. 小青矿高位钻孔采空区瓦斯抽采技术研究[D]. 阜新: 辽宁工程技术大学, 2016.

    JIN Zhaosheng. Study on gas extraction technology of goaf with high-position drilling in Xiaoqing Mine[D]. Fuxin: Liaoning Technical University, 2016.
    [14] 庄龙宇. 耿村矿高位巷抽采采空区瓦斯技术研究[D]. 焦作: 河南理工大学, 2016.

    ZHUANG Longyu. Study on gas diainage technology of high-position tunnel of Gengcun Coal Mine[D]. Jiaozuo: Henan Polytechnic University, 2016.
    [15] 马金魁,富向,郭晓敏. 采空区高位钻场瓦斯抽放技术的应用[J]. 中国煤炭,2016,42(2):104-106,116.

    MA Jinkui,FU Xiang,GUO Xiaomin. Application of gas drainage through high position drilling holes in the goaf[J]. China Coal,2016,42(2):104-106,116.
    [16] 曹文涛,赵忠义,王艳红. “以孔代巷”抽采采空区瓦斯技术研究[J]. 煤矿现代化,2015(6):37-39.

    CAO Wentao,ZHAO Zhongyi,WANG Yanhong. Research on gas technology of goaf extraction with "hole for lane"[J]. Coal Mine Modernization,2015(6):37-39.
    [17] 赵晶,皮希宇,王栓林,等. 高瓦斯薄煤层采煤工作面高位钻孔瓦斯抽采技术[J]. 煤炭科学技术,2015,43(11):78-82.

    ZHAO Jing,PI Xiyu,WANG Shuanlin,et al. Gas drainage technology with high level borehole at coal mining face in gassy thin seam[J]. Coal Science and Technology,2015,43(11):78-82.
    [18] 陈继刚. 余吾煤业公司地面钻井抽采采空区瓦斯技术研究及应用[J]. 煤炭技术,2014,33(12):179-182.

    CHEN Jigang. Study on gas drainage of gob area though surface well drilling and its application in Yuwu Coal Mining Company[J]. Coal Technology,2014,33(12):179-182.
    [19] 冀超辉,崔洪庆. 特厚急倾斜煤层瓦斯抽采关键技术与实践[J]. 矿业安全与环保,2021,48(6):99-103.

    JI Chaohui,CUI Hongqing. Key technology and practice of gas extraction in steep extra-thick coal seam[J]. Mining Safety & Environmental Protection,2021,48(6):99-103.
    [20] 郑三龙,范酒源,王刚,等. 急倾斜特厚煤层水平分层开采工作面瓦斯立体化抽采工艺技术研究与应用[J]. 矿业安全与环保,2020,47(6):69-74.

    ZHENG Sanlong,FAN Jiuyuan,WANG Gang,et al. Research and application of gas stereoscopic drainage technology in horizontal slicing working face of steeply and ultra-thick coal seam[J]. Mining Safety & Environmental Protection,2020,47(6):69-74.
    [21] 王华. 坚硬顶板综采面采空区瓦斯抽采技术优化及应用研究[D]. 太原: 太原理工大学, 2019.

    WANG Hua. The optimization and applied research of goaf gas extraction technology about hard roof comprehensive mechanized coal mininig face[D]. Taiyuan: Taiyuan University of Technology, 2019.
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出版历程
  • 收稿日期:  2022-08-31
  • 修回日期:  2023-03-25
  • 网络出版日期:  2022-12-13

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