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在我矿创记录、攀高峰的竞赛活动中,采矿车间于今年三月一日至四月五日(例假休息除外,合计31个工作日)取得回采巷道独头月进413.3米的好成绩。 1.地质条件 这次快速掘进是在我矿四中段穿八的十二分段中进行,共掘进五条多无底柱分段崩落法的回采巷道,最长的101.3米,平均长度75米,巷道间距7米。矿块的矿石类型主要是绢云母化高岭土化硅化细粒浸染状黄铁矿,呈灰——灰白色,为块状或粉块状。根据矿石机械物理性质,该矿块的矿石又可分成三种类型(见图1)。 (1)在穿8地段的矿石比较破碎、呈碎
In my record-breaking, peak-climbing competitions, the mining works achieved a good result of 413.3 meters of single-entry into the mining lane from March 1 to April 5 this year, excluding a total of 31 working days. 1. Geological Conditions The rapid excavation is carried out in the 12th section of the fourth section of the fourth mine where I wear the eight sections and a total of five mining tunnels with sub-caving sub-caving method are longest. The longest is 101.3 meters and the average length is 75 meters. Lane spacing 7 meters. Ore ore type is mainly sericite kaolin silicate fine disseminated pyrite, gray - off-white, lumps or lumps. According to the physical properties of ore machinery, the ore ore can be divided into three types (see Figure 1). (1) In the 8 sections of the ore is broken, was broken