黑山露天煤矿非构造裂隙岩体爆破网路设计与优化

在长期干旱、多风、少雨气候条件作用下,岩体结构会发生变化,岩体内会有大量的节理和裂隙,爆破作业时,岩石大块率高,爆堆不规整,飞石伤人事故经常发生。在爆破试验基础上,设计采用不对称的"V"型斜线逐孔毫秒微差起爆网路,大区深孔爆破,可以增加自由面,环向拉应力和径向拉应力作用效果明显。本文通过黑山露天煤矿非构造裂隙爆破理论与实践,使岩石爆破大块率降低5%~7%,大大提高爆破效果。

Design and optimization of fractured rock mass blasting network structure of non black open pit coal mine

In the long drought little rain, wind, climate conditions, rock mass structure will change, there will be a lot of jointed and fractured rock, blasting, rock blasting. The rate of massive, irregular, often flying wounding accident. In addition to optimization of blasting parameters, strengthen the explosive filling quality, according to the lithologic characters, initiation network application design different security,, by hole millisecond technology, can greatly improve blasting effect. In this paper, the theory and practice of constructing non fracture blasting Montenegro opencast coal mine, expounds the design and use of the network optimization of blasting has very important