风蚀地貌区浅埋厚煤层采动漏风规律研究  

Study on Air Leakage Law of Shallow and Thick Coal Seam Mining in Wind-Erosion Landform Areas

作　　者：张志立 孟凡林 田勇 柯飞 井源鑫 ZHANG Zhili;MENG Fanlin;TIAN Yong;KE Fei;JING Yuanxin(Henan Energyand ChemicalIndustry Group XinjiangInvestment Holding Co.,Ltd.,Urumqi,Xinjiang 830026,China;Kuqa Kexing CoalIndustry Co.,Ltd.,Kuqa,Xinjiang 842014,China;School of Mines,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China)

机构地区：[1]河南能源化工集团新疆投资控股有限公司,新疆乌鲁木齐830026 [2]库车市科兴煤炭实业有限公司,新疆库车市842014 [3]中国矿业大学矿业工程学院,江苏徐州市221116

出　　处：《矿业研究与开发》2023年第9期172-179,共8页Mining Research and Development

基　　金：国家自然科学基金面上项目(52174128)。

摘　　要：为研究风蚀地貌矿区浅埋厚煤层开采采空区漏风规律,以榆树岭矿井110501工作面为工程背景,通过相似模拟、数值模拟、现场实测相结合的方法对采空区漏风情况进行研究。研究结果表明:110501工作面开采后,裂隙发育至地表,地表漏风裂隙平均间距约为15 m,竖直方向上,距离煤层越近,覆岩下沉位移越大,最大下沉位移量约为8 m;裂隙贯通地表条件下,采空区自燃“三带”范围增大,地表风流为主要风源,风流路径为地表裂隙→采空区→工作面;工作面后方150 m采空区内为主要漏风区域,平均漏风强度为2.29 m^(3)/s,采空区上覆岩层裂隙是主要漏风通道,靠近采空区回风巷侧裂隙漏风能力最强。研究结果可为风蚀地貌矿区浅埋厚煤层开采时工作面通风和采空区自燃危险区域判定提供参考。In order to study the air leakage law of goaf in shallow and thick coal seam mining in wind-erosion landform mining areas,taking ll050l working face of Yushuling Mine as the engineering background,the phenomenon of air leakage in goaf was studied by combining similar simulation,numerical simulation and field measurement.The research results show that,after the mining of 110501 working face,cracks develop to the surface,and the average spacing of surface air leakage cracks is about 15 m.In the vertical direction,the closer to the coal seam,the greater the subsidence displacement of overburden,and the maximum subsidence displacement is 8 m.Under the condition that the crack is connected to the surface,the range of the"three zones"of spontaneous combustion in the goaf increases,and the surface air flow is the main wind source.The air flow path is follows as surface fissure-goaf-working face.The main air leakage area is located within the goaf 150 m behind the working face,with an average air leakage intensity of 2.29 m^(3)/s.The cracks in the overlying strata of the goaf are the main air leakage channels,and the air leakage capacity of the cracks near the return air roadway in the goaf is the strongest.The research results can provide a reference for determining the ventilation of working face and the danger area of spontaneous combustion in goaf during the mining of shallow and thick coal seam.

关 键 词：风蚀地貌区 浅埋厚煤层 漏风裂隙 遗煤自燃 漏风风量 

分 类 号：TD728[矿业工程—矿井通风与安全]