降低露天爆破大块率及控制根底产生的措施

对万洞山矿段中深孔台阶爆破产生大块及根底的原因进行分析,有地质构造、炸药单耗、孔网参数、装药结构、微差时间、起爆方式、连线方式等,总结了爆破技术经验,提出有效的技术措施及管理措施,包括合理的炸药单耗、孔网参数、装药结构、填塞长度等。

In this paper, the causes of large blocks and roots of medium and deep hole bench blasting in Wandongshan Mine are analyzed, including geological structure, explosive unit consumption, hole net parameters, charge structure, millisecond time, initiation mode, connection mode, etc., and the experience of blasting technology is summarized. The effective technical measures and management measures are put forward, including reasonable explosive unit consumption, hole net parameters, charge structure, packing length and so on.