露天矿中深孔爆破过程中炸药爆燃的原因

Cause of explosive deflagration in the process of open-pit mine deep hole blasting

在露天矿中深孔爆破过程中,炸药爆燃现象时有发生,不仅无法合理有效地利用炸药的能量、造成浪费,而且在一定程度上影响爆破效果,不能达到预定工程目的和经济上的利润最大化,同时对作业人员及生态环境造成危害,所以对炸药爆燃现象的原因进行分析非常必要。从爆破岩体的地形地质条件、爆破器材的选择和使用、孔网参数及起爆网络的选取等方面做了详细的解析,给出了相应的控制方法。

In the process of open-pit mine deep hole blasting, explosive deflagration occurred from time to time, which does not only reasonably and effectively utilize explosive energy and causes waste, but also influences blasting effect to some extent and can＇t reach predetermined project objective and economic profit maximization. Meanwhile, the deflagration phenomenon does harm to the workers and ecological environment. Therefore, it is very essential to analyze the reasons of explosive deflagration phenomenon. The article analyzes topographic and geological conditions of blasting rock mass, the selection and use of blasting equipment, hole pattern parameters and detonation network selection and gives the corresponding control method.