最近,大吉山钨矿对某部位的残采底柱成功地进行了一次药量为47.3吨的井下深孔大爆破,其崩矿量为15.5万吨,金属量达481吨(矿石品位0.31％)。这次用导爆管非电起爆系统的爆破新技术,较前两次采用导爆索和电爆网路起爆,在爆破器材费用上降低三分之 Recently, the Dajishan Tungsten Mines successfully conducted a deep hole blasting at a residual volume of 47.3 tons at the residual pillar at a certain site with an amount of 155,000 tons of ore and 481 tons of metal (ore grade 0.31% ). The use of detonating tube non-electric blast system blasting new technology, compared with the previous two using detonating cable and electric burst network detonated blasting equipment costs reduced by one-third