强突煤层底板穿层钻孔高效成孔技术
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摘要
底板穿层钻孔施工安全、应用范围广泛,已成为我国煤矿突出煤层瓦斯治理的有效方法之一,但在实施中,由于受到配套设备及工艺的因素制约,很难达到快速、高效的成孔要求。而底板穿层多列钻孔成孔技术借助于新型的多自由度、快速对孔调角钻机及工艺,具有消突、卸压效果好、钻进效率高等优势,采用该技术在淮北芦岭煤矿Ⅱ883运输巷对8号、9号强突煤层消突,瓦斯压力大于4 MPa,共施工5组60个钻孔,钻进效率提高1.3倍,瓦斯抽采纯流量提高30%,瓦斯抽采浓度超过95%。
The layer penetration drilling is safety and wide application,and it has become one of the effective methods to control the coal mine gas in our country. In practice. Due to the drilling equipment and drilling process factors,it was difficult to meet the requirements of rapid and efficient hole formation. On the bottom layer and columns of drilling hole with the aid of new technology for multi degree of freedom and rapid hole drill and angle adjusting process. The drilling technology of bottom layer multiple boreholes has advantages of the eliminating outburst,pressure relief,efficiency drilling,using the drilling technology of removing outburst of No. 8 and No. 9 coal seam in Luling Coal Mine of Huaibei Ⅱ 883 transportation roadway,and gas pressure was greater than 4 MPa,a total of 5 construction group of 60 holes,to improve the efficiency of 1. 3 times,gas extraction of pure flow increased 30%,more than 95% gas extraction concentration.
The layer penetration drilling is safety and wide application,and it has become one of the effective methods to control the coal mine gas in our country. In practice. Due to the drilling equipment and drilling process factors,it was difficult to meet the requirements of rapid and efficient hole formation. On the bottom layer and columns of drilling hole with the aid of new technology for multi degree of freedom and rapid hole drill and angle adjusting process. The drilling technology of bottom layer multiple boreholes has advantages of the eliminating outburst,pressure relief,efficiency drilling,using the drilling technology of removing outburst of No. 8 and No. 9 coal seam in Luling Coal Mine of Huaibei Ⅱ 883 transportation roadway,and gas pressure was greater than 4 MPa,a total of 5 construction group of 60 holes,to improve the efficiency of 1. 3 times,gas extraction of pure flow increased 30%,more than 95% gas extraction concentration.
引文
[1]禹业挺,余陶,邓中,等.突出煤层穿层钻孔增透强化抽采瓦斯消突效果研究[J].安徽建筑工业学院学报,2011,19(6):47-50.Yu Yeting,Yu Tao,Deng Zhong,et al.Research on outburst elimination effect of enhanced gas drainage by permeability improvement of outburst coal seam[J].Journal of Anhui Institute of Architecture&Industry(Natural Science),2011,19(6):47-50.
[2]冯增朝.低渗透煤层瓦斯强化抽采理论及应用[M].北京:科学出版社,2008.
[3]杨永刚.张集矿11-2煤底板穿层钻孔预抽瓦斯[D].淮南:安徽理工大学,2013.
[4]郭佳.张集煤矿底板穿层钻孔瓦斯抽采技术研究[D].淮南:安徽理工大学,2011.
[5]陈贵,周加庆,马岩.朱仙庄煤矿Ⅱ831工作面区域条带消突技术研究[J].安徽理工大学学报(自然科学版),2011(9):52-56.Chen Gui,Zhou Jiaqing,Ma Yan.Technology of gas outburst elimination in longwallⅡ831 of Zhuxianzhuang Coal Mine[J].Journal of Anhui University of Science and Technology(Natural Science),2011(9):52-56.
[6]黄旭超,王克全,孙东玲.被保护煤层底板穿层抽采钻孔合理布置方式研究[J].世界科技研究与发展,2011,33(4):608-610.Huang Xuchao,Wang Kequan,Sun Dongling.Study on penetration drainage bore-hole reasonable layouts in bottom roadway of protected coal seam[J].World Sci-Tech R&D,2011,33(4):608-610.
[7]肖乐军.突出煤层底板抽放巷优化布置及其应用研究[J].世界科技研究与发展,2011,33(4):608-610.Xiao Lejun.Optimal layout and application of drainage roadway in outburst coal seam floor[J].World Sci-Tech R&D,2011,33(4):608-610.
[8]王鹏,李宁.底板瓦斯抽放岩巷合理位置及穿层钻孔布置研究[J].河南科技,2015(9):60-62.Wang Peng,Li Meng.Study on reasonable position of bottom gas drainage rock roadway and layout of layer penetration and hole drilling[J].Journal of Henan Science and Technology,2015(9):60-62.
[9]纪宝柱.芦岭煤矿瓦斯抽采系统优化技术研究[J].水力采煤与管道运输,2013(1):24-25.Ji Baozhu.Research on optimization technology of gas extraction system in Luling Coal Mine[J].Hydraulic Coal Mining and Pipeline Transportation,2013(1):24-25.
[2]冯增朝.低渗透煤层瓦斯强化抽采理论及应用[M].北京:科学出版社,2008.
[3]杨永刚.张集矿11-2煤底板穿层钻孔预抽瓦斯[D].淮南:安徽理工大学,2013.
[4]郭佳.张集煤矿底板穿层钻孔瓦斯抽采技术研究[D].淮南:安徽理工大学,2011.
[5]陈贵,周加庆,马岩.朱仙庄煤矿Ⅱ831工作面区域条带消突技术研究[J].安徽理工大学学报(自然科学版),2011(9):52-56.Chen Gui,Zhou Jiaqing,Ma Yan.Technology of gas outburst elimination in longwallⅡ831 of Zhuxianzhuang Coal Mine[J].Journal of Anhui University of Science and Technology(Natural Science),2011(9):52-56.
[6]黄旭超,王克全,孙东玲.被保护煤层底板穿层抽采钻孔合理布置方式研究[J].世界科技研究与发展,2011,33(4):608-610.Huang Xuchao,Wang Kequan,Sun Dongling.Study on penetration drainage bore-hole reasonable layouts in bottom roadway of protected coal seam[J].World Sci-Tech R&D,2011,33(4):608-610.
[7]肖乐军.突出煤层底板抽放巷优化布置及其应用研究[J].世界科技研究与发展,2011,33(4):608-610.Xiao Lejun.Optimal layout and application of drainage roadway in outburst coal seam floor[J].World Sci-Tech R&D,2011,33(4):608-610.
[8]王鹏,李宁.底板瓦斯抽放岩巷合理位置及穿层钻孔布置研究[J].河南科技,2015(9):60-62.Wang Peng,Li Meng.Study on reasonable position of bottom gas drainage rock roadway and layout of layer penetration and hole drilling[J].Journal of Henan Science and Technology,2015(9):60-62.
[9]纪宝柱.芦岭煤矿瓦斯抽采系统优化技术研究[J].水力采煤与管道运输,2013(1):24-25.Ji Baozhu.Research on optimization technology of gas extraction system in Luling Coal Mine[J].Hydraulic Coal Mining and Pipeline Transportation,2013(1):24-25.