【摘要】 分析了孔底起爆的作用机理 ,阐述了孔底起爆在上向扇形中深孔爆破中能降低大块产出的破碎机理 ;提出了在工业爆破中具体实施该技术之前应解决的问题 ,介绍了具体的操作办法 ,同时也列举了可能出现问题的注意事项。最后通过综合对比评述 ,孔底起爆优于孔口起爆 ;按柿竹园矿年处理50万t矿石量计算 ,每年至少可为企业创造100万元以上的直接经济效益。更多还原

【Abstract】 The paper analyse the mechanism of hole-bottom detonating and set forth the crushing mechanism of hole-bottom detonating in medium-length hole blasting decrease the production of big block ores. Some difficult problems in industrial blasting have been put forward and the concrete operating methods are presented. Finally, it is found that the hole-bottom detonating is prior to hole-mouth detonating. They dispose of 0.5 millon tons ores every year in Shizhuyuan Nonferrous Metals Mine,according to these amounts, can bring about more than one million yuans in direct profits every year.更多还原