某矿快速掘进最优炮孔间距的选择

山西某矿5308底抽巷在掘进过程中速度慢、效率低,直接影响工作面的瓦斯抽采,为了改善上述情形,对炮孔间距进行研究。通过使用ANSYS软件对不同炮孔间距下快速掘进效果的模拟分析,并经现场验证,得出了适应该矿的最佳炮孔间距。结果表明：炮孔间距为500 mm时,爆破产生裂隙发育范围和岩石损伤区域都最大,快速掘进的效果最好。

Selection of Optimal Hole Spacing for Rapid Excavation in a Mine

Slow speed and low efficiency of 5308 bottom drainage roadway in a mine of Shanxi directly affect gas drainage in working face.In order to improve the above situation,the hole spacing is studied.Using ANSYS to simulate and analyze the effect of rapid tunneling under different hole spacing and verify it on site,the best hole spacing of the suitable mine is obtained.The results show that when the hole spacing is 500 mm,the crack growth area and rock damage area are the largest,and the effect of fast tunneling is the best.