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云台山硫铁矿认真学习湖南桃林铅锌矿盲天井深孔爆破一次成井经验,结合本矿实际情况,于9月份在-10米至0米水平,大胆进行了小孔径(φ62毫米)深孔爆破一次成井新工艺试验,深孔一次爆破完成7米高断面2×2米~2垂直通风天井,效果很好,质量符合设计要求,取得了初步可喜成果。 采用小孔径布置炮孔,省去了桃林铅锌矿经验中扩大掏槽孔径的繁杂工序,改用装药器装药,使天井深孔爆破一次成井新工艺更加完善,技术经济效果将会更好。
The Taishan Mountain Pyrite Mine carefully studied the experience of deep wellbore blind blasting once completed in the Taolin lead-zinc mine in Hunan Province. Taking the actual situation of this mine into consideration, the small pore diameter (φ62 mm) was daringly conducted at the level of -10m to 0m in September Hole blasting a new technology into a well test, a deep hole blasting completed 7 m high section 2 × 2 m ~ 2 vertical ventilation patio, the effect is good, the quality of the design requirements, and achieved initial gratifying results. The use of small aperture arrangement of the hole, eliminating the Taolin lead-zinc mine experience in expanding the complexity of cutting the aperture, the use of charge changer, the deep well borehole blasting once completed a new process more perfect, technical and economic effects will be better.