煤矿安全2017，Vol.48Issue(12)：139-141,3.DOI:10.13347/j.cnki.mkaq.2017.12.037
“两硬”条件下回采巷道强矿压显现防治技术
Prevention Technology of Strong Strata Behaviors of Mining Roadway with Hard Roof and Hard Coal
摘要
Abstract
Aiming at the problem of strong strata appear of mining roadway with hard roof and hard coal,based on the field observation and theoretical analysis,the strong strata behavior of roadway is analyzed and prevention measures with break-top blast in deep hole and large diameter pressure relief hole are proposed,and the blasting parameters and the layout of the pressure relief hole are determined.By comparing the deformation of the roadway and the intensity of micro-seismic activity,the effectiveness of the prevention measures is tested.The result indicates that the prevention measures mentioned above safely release the elastic energy of the coal body in mining roadway,destroy successfully the integrity of hard roof in mined-out area and energy storage conditions of coal pillars,eliminate the dangerousness of strong strata behaviors of mining roadway,ensure the safety and efficiency of the mine.关键词
两硬/强矿压显现/弹性能/深孔断顶爆破/大直径卸压孔Key words
hard roof and hard coal/strong strata behaviors/elastic energy/break-top blast in deep hole/large diameter pressure relief hole分类
矿业与冶金引用本文复制引用
马斌文,邓志刚,赵善坤,李少刚,冯宇峰,苏振国..“两硬”条件下回采巷道强矿压显现防治技术[J].煤矿安全,2017,48(12):139-141,3.基金项目
国家自然科学基金资助项目(51404140,51574150) （51404140,51574150）
