预控顶爆力运搬房柱采矿法的应用  

Application of Room and Pillar Mining Method by Roof Control and Explosive Haulage

作　　者：李宗利 赵林海 白新营 刘萍 张选固 

机构地区：[1]西北有色地质勘查局七一七总队,陕西宝鸡721015

出　　处：《甘肃冶金》2015年第1期1-10,共10页Gansu Metallurgy

摘　　要：二里河铅锌矿矿体受背斜控制，矿体沿背斜鞍部向东延伸，倾伏角18°～25°，倾伏向110左°右。鞍部矿体平均厚度12．81 m，矿体倾角平缓，采矿回采率低，一直是矿山研究探讨的课题。经过二十年的摸索，采用“预控顶爆力运搬房柱采矿法”效果较好。把鞍部矿块划分为矿房和矿柱，第一步回采矿房，在矿房回采之前，先用浅孔沿矿体顶板切开矿体（切顶，把矿体与顶板围岩分开），暴露顶板，用锚杆对顶板进行全面系统的预先锚固，然后爆力运搬方法回采矿房；第二步回采间柱，这种方法安全简便、回采率高，很值得类似矿山借鉴。The Erlihe lead and zinc deposit is controlled by anticline, and the ore bodies are stretched eastward along the anticline saddle, with dip angle of 18°~25°,and orientation to 110°.The average thickness of the ore bodies in anticline saddle is 128.1 m.How to mine out the ore bodies in saddle part is a very important task for the geologists who work there. After twenty years’ practice, they found that application of the roof-control and explosive haulage to the room and pillar method is an efficiency mining method.Divided the ore block into room and pillar, and the first step is backstoping the chamber, and first cut the ore body along the roof by the shallow holes, and then the roof will be exposed and the roof was bolted with the anchor rod all-round, afterwards explosive haulage from the chamberis implemented.Then the ore pillar is recovered .This method is safe and efficient, along with the high recovery,and can be used extensively in similar mines.

关 键 词：二里河铅锌矿 鞍部矿体 切顶 预控顶爆力运搬房柱采矿法 

分 类 号：TD853.32[矿业工程—金属矿开采]