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古布金铁矿采用以下三种矿房底柱结构: 用两条出矿巷道准备的底柱,每条出矿巷道各有两条平行布置放矿漏斗,采下的矿石沿出矿巷道运给沿矿房长轴布置的运输平巷(图1,a); 用两条出矿巷道准备的底柱,放矿漏斗的布置方式与图1,a所示的相同,运输平巷布置在矿房的短轴侧(图1,б); 用三条出矿巷道准备的底柱,每条出矿巷道各有两个对称布置的放矿漏斗(矿房长75m时),采下的矿石运到沿矿房长轴布置的运输平巷(图1,B)。上述三种底柱结构的共同特点是用浅孔法进行拉底,拉底高度为1.9m,矿房的浅孔拉底工程量约为900m~3。用浅孔法形成拉底空间是低效而成本较高的工艺。例如,lm~3拉
Gubu Gold Mine uses the following three kinds of mine floor pillar structure: with two outposts prepared by the end of the column, each of the two mine out of each have two parallel arrangement of funnel mining, mining ore taken along the roadway (Figure 1, a) along the long axis of the mines; the bottom pillars prepared by two out of the mine roadway, the laying funnel arranged in the same way as shown in Figure 1, a, transport lanes arranged in the mine (Figure 1, б); with the three out of mine roadway at the bottom of the column, each of the two tunnels each have two symmetrical layout of the funnel (mine length 75m), the mining of ore shipped To the transport lane along the long axis of the mines (Figure 1, B). The common features of the three kinds of bottom pillar structure are that the shallow hole method is used for pulling the bottom, the bottom height is 1.9m, and the shallow hole bottoming amount of the mining house is about 900m ~ 3. The shallow hole method to create bottom space is inefficient and costly process. For example, lm ~ 3 pull