一、支架子打水眼的开始时间与前后作业情况本矿自一九五○年四月即派班长一名及技工两名,在本山富矿坑试验支架子打水眼,因缺少经验,有时两班放一遍炮,进度也不过1米左右。总之,一个班平均深一米也不能打完。这样一直到五月份有色金属生产先进者参观团来矿,介绍了第一金铜矿喷雾式打眼法,领导上立即接受了这个办法,开始试验。但经过一月时间,证明这个办法须多用一人持喷雾器,机工全身淋湿,易患腰腿痛病;而且向穿孔喷雾后,产生外湿里干、容易堵塞、岩粉不能吹出等困难,无法普遍推行。所以六月份领 First, the supporters hit the water eye start time and before and after operations The mine from April 1950 to send a squad leader and mechanic two, in the mountain rich pit pilot scaffolding, due to lack of experience, and sometimes Put the gun twice in a row, the progress is only about 1 meter. In short, an average of one meter a class can not finish. This way until May non-ferrous metal production to visit the group to the mine, introduced the first gold and copper spray-type eye-opener, the leadership immediately accepted this approach to begin the experiment. However, after a month’s time, this method proved to require one more person to hold a sprayer. The mechanic would have to wet his body and become susceptible to low back pain. After spraying to the perforation, it would be difficult to block the outside wetness, Can not be universally implemented. So in June