摘要
为解决官地煤矿12605工作面巷道切顶卸压、围岩不稳定等问题,采用理论分析、数值模拟等手段确定聚能爆破切顶技术参数;采用炮孔深度6.0 m,间距1.0 m布置炮孔方案;确定沿空留巷加强支护方案。确保了沿空留巷的围岩稳定。
To solve the instability of surrounding rock in roof cutting and pressure-relief at 12605 working face of Guandi Colliery,the roof cutting technology by cumulative blasting was adopted with blasting hole depth of 6.0 m and hole layout distance of 1.0 through theoretical analysis and numerical simulation.
作者
李斌
Li Bin(Guandi Colliery,Xishan Coal&Electricity Group Co.,Taiyuan,Shanxi 030022)
出处
《江西煤炭科技》
2020年第1期105-108,共4页
Jiangxi Coal Science & Technology
关键词
沿空留巷
爆破切顶
卸压支护
gob-side entry retaining
roof cutting by blasting
pressure-relief support
