周边孔炮孔密集系数对光面爆破效果影响研究  

Study on the Influence of the Density Coefficient of Surrounding Hole on Smooth Blasting

作　　者：郭进成 GUO Jin-cheng(Majiliang Coal Mine of Datong Coal Mine Group,Datong 037003,China)

机构地区：[1]大同煤矿集团马脊梁矿,山西大同037003

出　　处：《煤》2018年第7期11-13,16,共4页Coal

摘　　要：周边孔炮孔密集系数直接决定了巷道光面爆破效果。为研究周边孔炮孔密集系数对光面爆破效果的影响,文章通过理论分析,计算出周边孔炮孔密集系数范围为0.78~0.9,再运用动力有限元软件ANSYS/LS-DYNA对3个参数(0.8、0.84、0.9)作进一步模拟分析,得出最合理的炮孔密集系数0.84,将该参数在马脊梁矿3号煤层辅助运输巷进行试验,取得了良好的光面爆破效果,巷道未出现超挖,残孔率达90%以上,成型质量高。The density coefficient of the surrounding hole directly determines the smooth blasting effect. Influence of hole density coefficient of holes on the study of the effect of smooth blasting,through theoretical analysis,calculate the holedensity coefficient range of 0.78 ~ 0. 9,using the dynamic finite element software ANSYS/LS-DYNA on the three parameters（ 0. 8,0. 84,0. 9） for further numerical simulation analysis,the exact density coefficient of holes 0. 84. The blasting parameters tested in Taoyuan Coal Mine,a transport lane,made of smooth blasting effect is good： the tunnel without excavation. The residual hole rate reached more than 90%,high forming quality.

关 键 词：周边孔 炮孔密集系数 爆破效果 光爆层 数值模拟 

分 类 号：TD235.3[矿业工程—矿井建设]