遵照毛主席关于“预防为主”的教导,为加强坑道和隧道作业中矽肺病的防治,根据当前部队,在干旱缺水地区,采用干式钻眼作业面粉尘浓度甚高的实际情况,实行两个“三结合”,与铁道兵部队和地方有关单位的协作,经过一年多的努力,初步研制了干式凿岩“75-1型孔口捕尘器”。经试用,证明降尘效果良好,现介绍如下。 In accordance with Chairman Mao’s teaching on “prevention first”, in order to strengthen prevention and treatment of silicosis in tunnels and tunneling operations, according to the current situation in dry and water-scarce areas where the concentration of dust in dry-boring operations is very high, Two “three combination”, with the cooperation between the railway corps units and local units, after more than a year of hard work, initially developed a dry rock drill “75-1-type port dust collector.” The trial proved that the dust effect is good, are presented below.