区段煤柱宽度变化下工作面矿压危险性分析  

Risk Analysis of Mine Pressure in Working Face under Section Coal Pillar Width Variation

作　　者：王振宇 郝宪杰[2] WANG Zhenyu;HAO Xianjie(BGRIMM Technology Group,Beijing 100160,China;School of Energy and Mining Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]中国矿业大学(北京)能源与矿业学院,北京100083

出　　处：《煤炭技术》2024年第8期52-56,共5页Coal Technology

摘　　要：区段煤柱的宽度会影响工作面矿压变化从而导致冲击危险的发生。以某煤矿工作面为研究背景,由于受到相邻的工作面的影响,该工作面回风巷道侧预留保护煤柱宽度发生变化,因此将工作面沿走向划分为小煤柱、小煤柱-集中巷和大煤柱3个区域。分别沿倾向和走向分析不同区域工作面矿压分布特征,分区分级进行危险区的划分。结果表明:3个区域中小煤柱-集中巷区域危险区分布最大,危险等级排序为小煤柱-集中巷区域>小煤柱区域>大煤柱区域。分析结果可为后续工作面卸压防控提供依据,做到精准防控,节省人力物力。The width of coal pillar will affect the change of mine pressure in the working face and lead to the occurrence of rock burst risk.Taking a coal mine face as the research background,due to the influence of the adjacent working face,the width of the reserved protective coal pillar at the side of the return air roadway of the working face changes,so the working face is divided into three areas along the strike:small coal pillar,small coal pillar-concentrated roadway and large coal pillar.The distribution characteristics of mining pressure in different regions are analyzed along the trend and trend,and the dangerous areas are divided by zoning.The results show that the distribution of dangerous areas in the three regions is the largest in the small and medium coal pillar-concentrated roadway area,and the danger grade is sorted as the small coal pillar-concentrated roadway area is larger than the small coal pillar area is larger than the large coal pillar area.The analysis results can provide a basis for the subsequent work face pressure relief prevention and control,achieve accurate prevention and control,and save manpower and material resources.

关 键 词：区段煤柱宽度 工作面矿压 危险区分析 

分 类 号：TD324[矿业工程—矿井建设]