论文部分内容阅读
我矿主要是采用有底柱的小中段崩落和阶段崩落法回采的矿山。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、爆破准备时间及因爆破而影响的生产时间;此外,多分段、多矿房在挤压状态下一次爆破,不合格的大块率也随着降低,在合理安排放矿的情况下,可降低矿石的损失率和贫化率。
Mine is mainly mine using bottoms of small and medium-term caving and stage caving method mining. Years of production practice has proved that in order to improve the production capacity of mining houses and meet the needs of strong mining, it is necessary to expand the amount of ore detonation in a single blasting and reduce the number of blasting, the time for blasting preparation and the production time affected by blasting. In addition, Section, more mines in the extrusion state of a blasting, unqualified boulder rate also decreases with the reasonable arrangements for the case of ore, ore can reduce the loss rate and the depletion rate.