穿爆工艺合理参数的选择是完善采矿方法和改善技术经济指标的关键之一。虽然在同样的爆破工艺条件下,增加孔网尺寸可减少崩矿的费用,但将增加回采工作面的放矿和矿石运搬费用,并在大多数情况下,将降低回采工作面的生产能力。被崩落原岩的地 The selection of reasonable parameters for wear blasting is one of the keys to improve the mining method and improve the technical and economic indexes. While increasing the size of the mesh reduces blasting costs under the same blasting conditions, it will increase the costs of ore and ore handling at the mining face and in most cases will reduce the production capacity of the working face . The ground was destroyed by the original rock