碎软煤层氮气排渣气动定向长钻孔成孔技术应用研究

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中图分类号：T273 文献标志码：A 文章编号：2095-2945(2025)23-0177-04

Abstract:Withthegradual maturityofpneumaticdirectionaldrilingtechnologyinbroken-softcoalseam，nitrogen directionaldrilingtechnologyhasbeenapliedin"onehole，twoelimination"ofworkingfac,coalstripelimination，working faceareagasmanagement,etc.Nitrogenasaninertgasisalsograduallusedasagassourcetoreplaceconventionalair. Throughthecombinationofpneumaticdirectionaldrillngtechnologyandnitrogenslagingtechnolgytesystematicanalysisf pneumaticdirectionallongdrillng technologyforbroken-softcoalseamdowngradientwascarredout,andthepeumatic directionaldrllingtechnologofitrognslaggng,thesupptingqipment,andthemainparametersandcharacteristicsofthe gassupply wereresearched,andtheon-sitetestwascariedoutinZouzhuangMinetofurtherverifythereliabiltyof the equipment,the selection of the process method and key parameters，and the maximum depth of 516m hole record was finally achieved. The maximum hole depth of 516m was finally achieved,which ensured the safety of coal tunneling and provided a good demonstration for the further popularization and application of this technology.

Keywords:broken-softcoalseam；nitrogenslagdischarge；alongthecoalseam；pneumaticdirectionallongdrillng;hole forming technology

随着煤矿井下定向钻进技术的成熟，近水平定向长钻孔因其孔深长、轨迹可控等特点，已大量应用于煤矿井下瓦斯抽采，包括高位定向长钻孔、顺层长钻孔和穿层钻孔等。（剩余6985字）