山东焦家金矿爆破工艺优化研究

Study on Optimization of Blasting Technology in Jiaojia Gold Mine,Shandong Province

随着焦家金矿开采深度的不断下移,岩石硬度系数逐渐变大,普通乳化油炸药配合角柱式掏槽或五角梅花空心掏槽技术爆破效率低,已无法满足高效生产形势的要求。本文通过引进"粒状乳化铵油炸药"及其大直径中心空眼螺旋掏槽技术,提高了单循环作业进尺。同时,由于其爆破技术产生的有毒和有害气体相对减少,缩短了通风时间,加快了作业循环,提高了工效。这项技术大大提升了掘进工作面的进尺,加快了开拓工程进度。

As the Jiaojia gold mine depth emulsion oil explosives tie angle column constantly moving,rock hardness coefficient becomes larger,traditional type cut slot or five angle plum hollow cut slot technology blasting efficiency low,has not meet efficient production situation.In this paper,we have introduced granular emulsion ammonium fried drug and large diameter center empty eye spiral cut slot technology.Not only improve the single loop operating footage, but also due to the relatively small number of toxic and harmful gases produced by blasting technology at the same time ,to shorten the duration of ventilation and to speed up the operating cycle ,so that this technique greatly enhanced the heading face footage and accelerated the speed of development works.