第46卷第7期2023年7月采矿与井巷工程城郊煤矿无煤柱沿空掘巷技术研究与应用煤炭与化工CoalandChemicalIndustryVol.46No.7Jul.2023杨长瑞（河南省正龙煤业有限公司城郊煤矿，河南永城476600）摘要：为减少巷道变形，提高煤炭资源的回收率，城郊煤矿在十四辅助采区轨道巷开展无煤柱沿空掘巷支护技术的研究，采用测力计对锚杆索等支护体进行压力观测发现无煤柱沿空掘巷的支护压力呈现不对称分布。为此设计采用了不对称支护方案。顶板采用锚杆+钢筋网+钢筋梯+锚索梁联合支护，巷道左帮实体煤侧采用锚杆+钢带+钢筋网联合支护，巷道右帮沿空侧采用29U型钢棚柱+钢筋网联合支护。观测表明，最大离层量为61mm，最大底量为120mm，巷道变形在可控范围内。关键词：无煤柱；沿空掘巷；测力计；不对称分布中图分类号：TD353Researchandapplicationofgob-sideentrydrivingtechnologywithoutcoalpillarinChengjiaoCoalMine(ChengjiaoCoalMine,HenanZhenglongCoalIndustryCo.,Ltd.,Yongcheng476600,China)Abstract:Inordertoreducethedeformationofroadwayandimprovetherecoveryrateofcoalresources,theresearchonthesupporttechnologyofgob-sideentrydrivingwithoutcoalpillariscarriedoutinthetrackroadwayofthefourteenauxiliaryminingareainChengjiaoCoalMine.Thepressureobservationofboltcableandothersupportingbodiesbydynamometershowsthatthesupportpressureofgob-sideentrydrivingwithoutcoalpillarpresentsasymmetricdistribution.Anasymmetricsupportschemeisadoptedforthisdesign.Theroofissupportedbybolt+steelmesh+steelladder+anchorbeam.Theleftsideoftheroadwayissupportedbybolt+stelbelt+steelmesh,andtherightsideoftheroadwayissupportedby29Usteelshedcolumn+steelmesh.Theobservationshowsthatthemaximumseparationamountis61mm,themaximumfloorheaveis120mm,andtheroadwaydeformationiswithinthecontrollablerange.Keywords:nocoalpllar;gob-sideentrydriving;dynamometer;asymmetricdistribution文献标识码：BYangChangrui文章编号：2095-5979（2023）07-0013-040引言根据留设的保护煤柱宽度，沿空掘巷可以分为有煤柱掘巷和无煤柱掘巷两种[1-4。随着煤矿支护技术的提高和煤炭资源的减少，许多专家学者对无煤柱沿空掘巷技术展开了研究[5-7，在孤岛工作面[8]、三软煤层9]、大倾角煤层[0]、强冲击厚煤层[叫等条件下成功应用。正龙煤业城郊...
