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安东诺夫斯克矿目前在硅石矿体的开采中碰到厚大的构造断裂带,岩体破碎。矿床的特点是矿物组分单纯,硅石的SiO_2含量达98%以上,但埋藏条件相当复杂。用露天法开采,台阶高度10～15米。用牙轮钻机穿孔,孔径214～250毫米。用-4.6电铲装载,矿岩均用自卸汽车运输。在矿石中布置单排炮孔,而废石中布置单排和多排炮孔。超钻2.5米。湿孔用防水炸药。硅石的主要用户为铁合金厂,要求的硅
The Antonovsk Mine currently encounters thick tectonic faults in the mining of silica ore bodies, and the rock mass is broken. Mineral deposits are characterized by simple components, silica SiO 2 content of 98% or more, but the burial conditions are quite complicated. Open-air mining, step height of 10 to 15 meters. Percussion with a cone drill, bore 214 ~ 250 mm. Loading with a -4.6 electric shovel, ore rock dump truck are transported. Arranged in the ore single row of holes, and waste rock arranged single row and multiple rows of holes. Super drilling 2.5 meters. Wet hole with waterproof explosives. The main users of silica ferroalloy plant, the required silicon