露天矿大区爆破安全起爆网路分析

Analysis of safe initiation network for large space blasting in open pit mine

为了提高露天矿爆破效果,增大爆破量,在大、中型露天煤矿的爆破中,采取了大区排间、孔间毫秒微差爆破。通过导爆雷管和导爆索的有效连接,实现了起爆网路的优化,结果表明,该起爆网络具有大块率降低、爆破后冲作用小、爆破振动减少等优点,实现了安全、高效爆破。

In order to enhance blasting effect and increase blasting output,the millisecond blasting was adopted in large space and among holes for many large and medium open pit coal mines.The optimum initiation network was realized by the effective connection of detonator and detonating cord.The initiation network has such advantages as low boulder yield,small back impact and few blasting vibration,achieving safe and high efficient blasting.