经坊煤矿动压巷道围岩控制技术及应用分析  

Dynamic pressure roadway surrounding rock control technology for Jingfang Coal Mine

作　　者：刘闫阁 LIU Yan’ge(Shanxi Changzhi Jingfang Coal Industry Co.,Ltd.,Changzhi 047100,China)

机构地区：[1]山西省长治经坊煤业有限公司,山西长治047100

出　　处：《陕西煤炭》2025年第3期86-89,共4页Shaanxi Coal

摘　　要：特厚煤层综放区段围岩巷道的变形控制是制约煤矿安全生产的常见难题,为提高动压巷道围岩控制技术,通过理论分析和工业性试验,对经坊煤矿特厚煤层综放工作面回风巷的变形和支护条件进行了研究。结合极限平衡理论和巷道断面尺寸,计算出3-805工作面回风巷煤柱宽度为6 m。在此基础上,提出了与特厚煤层全大断面回采巷道协同的“煤柱优化-切顶卸压-路径修正-锚杆支护”围岩控制体系,并对围岩变形、支护体受力及现场注浆效果进行了监测。协同法巷道围岩控制现场实践表明,围岩变形得到了有效控制,巷道收敛减小。The deformation control of surrounding rock roadway in the comprehensive caving section of extra-thick coal seam is a common problem restricting the safe production of coal mines.In order to improve the surrounding rock control technology of the dynamic pressure roadway,the deformation and support conditions of the return airway of the comprehensive caving working face of the extra-thick coal seam in Jingfang Coal Mine have been studied through theoretical analysis and industrial tests.By combining the limit balance theory and the roadway section size,the width of coal pillar in the return air roadway of 3-805 working face is calculated to be 6 m.The surrounding rock control system of“optimization of coal pillar-roof cutting top pressure relief-path correction-anchor support”is proposed to work with the whole large-section mining roadway of the extra-thick coal seam,and the deformation of surrounding rock,the force of support body,and the effect of on-site grouting are monitored.The deformation of surrounding rock,the force of support body and the effect of grouting on site were monitored.The on-site practice of the synergistic method shows that the surrounding rock deformation has been effectively controlled,and the convergence of the roadway has been reduced.

关 键 词：岩层控制 煤柱 注浆改造 锚杆支护 

分 类 号：TD353[矿业工程—矿井建设]