地下矿用炸药现场混装技术的新进展

New Advancement of Site Mixing and Loading Technique for Underground Mine Explosive

地下矿山高效采掘生产中遇到的技术难题之一,就是如何实现上向中深孔的高效机械化装药。尤其是当上向深孔局部孔壁因挤压变形、错位严重时,常规装药法有可能无法实施,或者因炮孔装药质量差致使爆破效果不佳,而影响爆破落矿生产的正常进行。介绍了近年来BCJ系列乳化炸药装药车在地下金属矿山的试验研究情况,特别是在双鸭山铁矿,实现了上向垂直深孔(孔径φ90 mm,最大孔深≥30 m)现场混装乳化炸药技术的重大突破,为该矿采用深孔挤压爆破落矿提供了技术保障。

One of the technical problems for efficient mining in underground metal mines, is how to achieve mechanized charging in up-hole. Especially when the wall of up-hole is distorted and offset because of blast-hole being squeezed, the conventional charging method may be useless, or the poor charging results in poor blasting quality, and then the normal mining will not be carried out. The paper describes the typical examples for BCJ-charging truck in underground metal mines, and especially new progress in the site-mixing and loading technique in the up-hole（ min. borehole diameter 90mm, max. charging length ≥ 30 m） in Shuangyashan iron mine, has been achieved,which provides the technical support for tight blasting mining of long up-hole.