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我矿由于大量采用分层崩落法,所以木材消耗也大大增加。据初步统计1957年平均每采千吨矿石消耗坑木5.72立方米,木板2.85立方米。1958年平均每采千吨矿石消耗坑木5.20立方米,木板1.10立方米,由此可见木材实际消耗量是相当惊人的,所以如何降低木材消耗,实属当时极为迫切需要解决的问题。1957年我矿试制出一台滑轮组回柱机如图1。回收效果很好。现将滑轮组回柱机的构造和工作情况分述如下:
As a result of extensive use of mine dilapidated caving, timber consumption also increased significantly. According to preliminary statistics, in 1957, an average of 5.72 cubic meters of pit wood, 2.85 cubic meters of wood were consumed per thousand tons of ore. In 1958, an average of 5.20 cubic meters of pits and 1.10 cubic meters of mined timber were consumed per thousand tons of ore. This shows that the actual consumption of timber is quite staggering. Therefore, how to reduce the consumption of timber is an extremely urgent problem to be solved at that time. In 1957, I trial-produced a pulley block machine back to Figure 1. Recycling works well. Now pulley block cylinder machine structure and working conditions are described below: