我矿主要是采用有底柱小中段崩落和阶段崩落采矿方法的矿山,多年来的生产实践证明,要提高矿房的生产能力及适应强采的需要,必须扩大一次爆破的崩矿量,减少爆破次数,减少爆破准备时间和因爆破而影响的生产时间,只要能做到以上几点,对于多分段、多矿房在挤压状态下一次爆破,不合格的大块率将会降低,在合理安排放矿的情况下,可降低矿石的损失率和贫化率。扩大一次爆破的崩矿量就需要爆破大 My mine is mainly used in small and medium-sized pillar at the end of the collapse and the collapse of the mine mining methods, production practice over the years proved that to improve the production capacity of mines and adapt to the needs of strong mining, you must expand a blasting collapses and reduce The number of blasting, reducing the blasting preparation time and blasting due to the impact of the production time, as long as the above points can be achieved, for multi-stage, multi-house in the extrusion state of a burst, unqualified bulk rate will be reduced, In the case of reasonable ore draining, the ore loss rate and the depletion rate can be reduced. Explosion to expand a large amount of blasting needs blasting large