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我矿凤山豎井以八天时间掘通了102公尺的豎井,最高效率达到日进25公尺,现将其掘进方法简述如下。一、豎井一般特征和基本情况该井由北京冶金设计总院所设计的大型圆井,如图1,荒井为6.2公尺,净井5.5公尺,用混凝土预制塊支护,井全深380公尺,每50公尺设中段一处,豎井井口标高1574.0公尺座落于凤山之腰部,井位座标x=2726207.40;y=34494838.87,所通过岩石为f=3～6,破碎性很大,节理发达,层理不清的角礫膠结白云岩。仅掘鑿少量的坑道,都可以与原有的勘探坑
I mine Fengshan shaft to eight days to open a 102-meter shaft, the highest efficiency reached 25 meters per day, now its excavation method is as follows. First, the general characteristics of the shaft and the basic situation The well designed by the Beijing Metallurgical Design Institute of large round wells, as shown in Figure 1, Arai 6.2 meters, 5.5 meters net well, with concrete precast block support, deep well 380 Meters, set a mid-section every 50 meters, shaft elevation of 1574.0 meters is located in the waist of Fengshan, wells coordinates x = 2726207.40; y = 34494838.87, through the rock for the f = 3 ~ 6, crushing Large, well-knit joints, bedding gravel cemented dolomite. Only digging a small amount of tunnels, can be with the original exploration pit