深孔爆破弱化坚硬顶板影响因素分析及应用

Application and parameter analysis of softening hard roof with deep-hole blasting

摘要: 文章介绍了深孔爆破机理及其弱化坚硬顶板的主要影响因素,着重分析了钻孔长度、钻孔间距,钻孔直径,封孔长度,装药结构等对深孔爆破的影响。结合实例说明深孔爆破弱化坚硬顶板是可行的。

Abstract: This paper introduced the theory and main parameters of softening hard roof with deep-hole blasting. This paper emphatically analyzed the effect to deep-hole blasting of drilling length, hole pitch, hole diameter, plug length and loading structure. The practical application showed that softening hard roof with deep-hole blasting were feasible.