在金属矿山生产中,采场出矿的漏斗胫上部经常形成大空洞,影响出矿能力.过去出现这种问题时,要人钻入空洞,用爆破杆送上炸药进行处理,容易发生事故. 为了杜绝事故,安全生产,易门铜矿一坑广大职工在毛主席哲学思想的指引下,经过反复实践,制成了处理采空洞的土火炮.这种土火炮由炮筒、弹头、引火 In the production of metal mines, the upper part of the tibia of the funnel, which is often out of mine, often forms large voids that affect the ability to mine. In the past, when people encountered this problem, people were forced into holes and explosives were sent by explosive rods to deal with accidents. In order to put an end to accidents and ensure safe production, a large number of workers and staff of Yi Keng Copper Mine, under the guidance of Chairman Mao’s philosophical thought, made repeated attempts to deal with earth mines that were emplaced with holes,