煤炭科技2025，Vol.46Issue(1)：77-84,92,9.DOI:10.19896/j.cnki.mtkj.2025.01.015
特厚煤层第四分层开采冲击主控因素及防治研究
Research on main controlling factors and prevention and control of impact in the fourth layer of ultra-thick coal seam mining
摘要
Abstract
Taking the problem of rock burst in the fourth layer mining of the ultra-thick coal seam in Mengba Coal Mine as the research object,A systematic analysis was conducted on its main controlling factors of rock burst,aiming to reveal the law of mine vibration,and exploring effective prevention and control strategies.The study found that the"T"coal pillar structure in the mining area is the key fac-tor causing the fourth layer of rock burst.In addition,after the first layer of backfilling,the ultra-thick key rock layers were not complete-ly broken,resulting in insufficient protection of the goaf in the first layer and increasing the risk of impact in subsequent layers.The op-timization design and prevention and control measures for the fourth layer of Mengba Coal Mine were proposed,including optimizing the layout of roadways,setting reasonable mining speed,terminal line blasting technology,and the application of large-diameter pressure re-lief drilling.Practice has proven that these comprehensive prevention and control measures can significantly reduce the risk of rock burst in the fourth layer mining.This research not only provides solid support for the safe production of the fourth layer in Mengba Coal Mine,but also provides reference and inspiration for the safe mining of ultra-thick coal seams under similar conditions.关键词
特厚煤层/第四分层开采/冲击地压/主控因素/防治措施Key words
ultra-thick coal seam/the fourth layer mining/rock burst/main controlling factors/prevention and control measures分类
矿业与冶金引用本文复制引用
解庆典,韩光远,黄继等,沈威..特厚煤层第四分层开采冲击主控因素及防治研究[J].煤炭科技,2025,46(1):77-84,92,9.基金项目
国家自然科学基金项目(52404081) （52404081）
中国博士后科学基金项目(2022M722673) （2022M722673）
