蒙库铁矿巷道掘进布孔方式的优化

Optimization of Hole Arrangement Method of Roadway Construction in Mengku Iron Ore

巷道掘进布孔参数的合理与否,不但影响巷道掘进成本、施工难易程度及巷道掘进质量,而且也影响着后期巷道维护费用的多少;因为布孔参数合理时,爆破后不但对顶板围岩破坏小,而且因巷道轮廓整体的成型质量也较好,对降低巷道风化速度,抵抗开采时爆破活动及地压对巷道的破坏都有积极重要的作用。

The reasonableness of the hole parameters of roadway construction does not only affect the tunneling cost,the difficulty of construction and the quality of roadway construction,but also affects the maintenance cost of the roadway in the later stage.When the parameters of the hole are reasonable,after blasting,not only the damage to the surrounding rock of the roof is small,but also the overall forming quality of the roadway contour is good.It has a positive and important effect on reducing the weathering speed of the roadway,resisting the blasting activity,and damages by the ground pressure on the roadway.