煤矿井下碎软煤层泡沫钻进技术及应用

冀前辉, 董萌萌, 刘建林, 石磊

冀前辉, 董萌萌, 刘建林, 石磊. 煤矿井下碎软煤层泡沫钻进技术及应用[J]. 煤田地质与勘探, 2020, 48(2): 25-29. DOI: 10.3969/j.issn.1001-1986.2020.02.005
引用本文: 冀前辉, 董萌萌, 刘建林, 石磊. 煤矿井下碎软煤层泡沫钻进技术及应用[J]. 煤田地质与勘探, 2020, 48(2): 25-29. DOI: 10.3969/j.issn.1001-1986.2020.02.005
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JI Qianhui, DONG Mengmeng, LIU Jianlin, SHI Lei. Foam drilling technology and application for broken soft coal seam in underground coal mine[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(2): 25-29. DOI: 10.3969/j.issn.1001-1986.2020.02.005
Citation: JI Qianhui, DONG Mengmeng, LIU Jianlin, SHI Lei. Foam drilling technology and application for broken soft coal seam in underground coal mine[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(2): 25-29. DOI: 10.3969/j.issn.1001-1986.2020.02.005
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煤矿井下碎软煤层泡沫钻进技术及应用

  • 1. 煤炭科学研究总院，北京 100013;

  • 2. 中煤科工集团西安研究院有限公司，陕西 西安 710077

基金项目: 

国家重点研发计划项目（2018YFC0808200）

详细信息
    作者简介:

    冀前辉,1984年生,男,河南禹州人,博士研究生,副研究员,从事煤矿井下钻探技术研究.E-mail:jiqianhui@cctegxian.com

  • 中图分类号: TD41

Foam drilling technology and application for broken soft coal seam in underground coal mine

  • 1. China Coal Research Institute, Beijing 100013, China;

  • 2. Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China

Funds: 

National Key R&D Program of China(2018YFC0808200)

摘要

    摘要
  • 摘要: 针对煤矿井下碎软煤层瓦斯抽采中风压空气钻进施工中排粉能力有限，易造成粉尘污染问题，提出采用煤矿井下泡沫灌注系统及宽翼螺旋钻杆进行高效泡沫钻进的技术方案。通过对钻孔环空间隙流场的数值模拟，研究宽翼螺旋钻杆结构对泡沫钻进高效排粉的影响，确定头数3、槽宽26 mm、螺距110 mm为宽翼螺旋钻杆的优化结构参数。在淮北某矿3204工作面碎软煤层中进行了深度达195 m的本煤层钻孔试验，结果表明，相对于中风压空气钻进工艺，钻进回转阻力降低了42%~48%，表现出高效的排粉效果，可提高煤矿井下碎软煤层钻孔深度和成孔率。该工艺可为类似煤矿井下深钻孔施工提供借鉴。
    Abstract: Aiming at the limitation of middle pressure air drilling for gas drainage in soft and broken coal seam, such as limited drill cutting removal capacity, and dust pollution, foam drilling technique research in underground coal mines was carried out. CFD simulation of the flow field during the drilling process was conducted to obtain the optimized drilling tool structure parameters for efficient drill cutting transportation. Optimal structural parameters of wide-blade milled auger drill rod with the number of heads 3, the groove width 26 mm, and the pitch 110 mm were determined. A foam perfusion system suitable for underground coal mining was developed. Field test applications show that foam drilling technique and assorted wide-blade milled auger drill rods have high efficiency of cutting transportation. Rotatory resistance was reduced in a range of 42%-48%. The technique can improve drilling depth in soft and broken coal seam and provide a reference for similar deep coal mine drilling construction.
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    • 参考文献(15)
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出版历程
  • 收稿日期:  2019-12-19
  • 修回日期:  2020-02-19
  • 发布日期:  2020-04-24

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