The coal face of blasting mine in underground coal mine is a very complicated system of disaster environment, the spatio-temporal limit increases the accident probability of blasting operations.

• 煤矿井下炮采工作面是一个非常复杂的灾害环境系统,又由于时间、空间的限制,使得炮采工作面爆破作业引发事故的可能性增加。