“老于,这活没法干,一个班就打了两个孔,还累够呛”“没少出力,不多挣钱,我们图什么呀?”2014年11月中旬,在工作面打钻时,顶钻现象严重,职工们纷纷抱怨。一连串的问题,让于光辉有些喘不过气来。他盯着一旁的钻机陷入了思考中。通过对煤层走向的观察,他选择了钻机的角度,从15°到20°,从20°到25°,在反复中,他逐渐摸索出适应工作面的打钻角度,然后根据当时钻机所出煤屑的数量,及时调整钻机的推进速度。就这样,不到半个小时,一个测试 “Old age, this life can not do, one class hit two holes, but also enough to choke ” “No less power, not more money, what we plan? ” In mid November 2014, at Face drilling, the top diamond serious, workers have complained. A series of problems, so that some brilliant breathless. He stared at the side of the drill into thinking. Through the observation of the strike of the coal seam, he chose the angle of the drilling rig from 15 ° to 20 ° and from 20 ° to 25 °. In a repetitive process, he gradually worked out the drilling angle to adapt to the working face and then according to the drilling rig The amount of coal chips, timely adjustment of the drilling rig speed. In this way, less than half an hour, a test