我矿掘进工作面一直使用导火索点火爆破。为确保安全,改进导火索点火方法,以往曾采用过点火筒一次点火和电阻丝一次点火法,但都因准备工作麻烦,有的放炮工不能坚持使用。现在我们采用了竹筒侧孔插导火索一次点火法,准备工作简单,点火效果可靠,因此,很受放炮工的欢迎。侧孔竹筒,如附图所示。使用时,将导火索一一插入竹筒的侧孔中,留一孔插点火用的导 Mine excavation work surface has been using the fuse ignition burst. In order to ensure safety and improve the method of ignition of the fuse, once used the ignition of the ignition tube and the ignition of the resistance wire once, but all of them are in trouble due to preparation work and some workers can not stick to it. Now we use the bamboo tube side of the fuse inserted a fire ignition method, preparation is simple, reliable ignition effect, therefore, is very popular with artillery workers. Side hole bamboo, as shown in the figure. When used, the fuse will be inserted one by one into the side of the hole in the bamboo, leaving a hole plug ignition guide