中深孔爆破在隆回金杏金矿顶底柱回收中的应用

Application of Medium-length Hole Blasting in Recovery of Top and Bottom Pillar in Longhui Jinxing Gold Mine

文章对隆回金杏740中段224老采场顶底柱的地质条件、回收方案、中深孔布置、爆破方案等进行了仔细分析,制定合理的回采方案,为顶底柱的顺利回收创造了条件。对于中厚以上稳定矿柱间柱,通过布置采准工程,使用电子雷管、逐孔逐段、中深孔爆破方式进行回收,取得了较好效果,能为中等稳固的同类型矿山提供参考和借鉴。

In this paper,the geological conditions,recovery scheme,medium-length hole arrangement and blasting scheme of top and bottom pillars of 224 old quarry in the 740 middle section of Longhui Jinxing are carefully analyzed,A reasonable recovery scheme is formulated to create the conditions for the smooth recovery of top and bottom pillars.For the inter-pillar columns of stable ore above middle thickness,the recovery is carried out by arranging the mining alignment project and using electronic detonator,sequential blasting of each hole and section,medium-length hole blasting,which achieves good results and provides reference and guidance for the same type of mines with medium stability.