论文部分内容阅读
在矿山的爆破作业中,用电雷管作为起爆材料时,一个值得注意的安全问题是电雷管的意外爆炸。引起电雷管意外爆炸的原因,除违反安全规程或误操作外,多数是由杂散电流引起的。例如,1976年2月,延边和龙煤矿在联炮时,由于雷管的两根脚线分别触及工作面的轨道和大地,引起雷管的意外爆炸。1980年11月～12月间,京西扬坨煤矿在竖井开拓时,由于井筒内存在杂散电流先后两次引起电雷管意外爆炸。1975年广东四望璋煤矿在井筒掘进施工中,也因杂散电流引起电雷管意外爆炸。
One of the most notable safety issues when using electric detonators as detonating materials in mine blasting operations is the accidental explosion of electric detonators. The cause of the electric detonator accidental explosion, in addition to violating safety regulations or misuse, the majority is caused by stray current. For example, in February 1976, Yanbian and Long Colliery accidentally exploded as the two leg wires of the detonator hit the track and the ground of the work surface, respectively, at gunfire. During the period of November-December 1980, when the Yangxi coal mine in west Beijing opened up the shaft, the electric detonator exploded unexpectedly twice due to stray current in the wellbore. In 1975, Siwangzhang Coal Mine in Guangdong borehole excavation construction, but also due to stray current induced electric detonator explosion.