减少釬子的磨损,增加其使用期限,对于勘探坑道的掘进速度有着决定的作用。因为增长釬子的使用寿命,不但可以使鑽眼工作顺利进行,诚少修釬数量,而且由于增长了每个釬子的鑽眼深度,使得所需釬子数量也减少。当然,对于勘探坑道掘进的劳动生产率的提高以及成本降低也有着实际的意义。 Reducing the wear of the solder and increasing its useful life have a decisive effect on the tunneling speed of the exploration tunnel. Because of the increased service life of the brazing rod, not only can the drilling work be carried out smoothly, but the number of brazing is less and the number of required brazing rods is also reduced due to the increased drilling depth of each brazing rod. Of course, there is also practical significance for the improvement of labor productivity and cost reduction of exploration tunneling.