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过去作石方大爆破,须有大型的钻孔设备(常用苏联 Ty—20型深孔钻机)和空气压缩机等。第六冶金建设公司在缺乏这类设备的情况下,发动群众,大搞三结合,试用自己改装的01—38型小钻机钻孔,配合深孔药壶爆破,即可爆破不同深度的石方(最深达13米),同样能作大爆破。在某厂石方平整中,业已大量采用,每次爆破量约5万立方米。原计划六月
In the past, for the Shifang Blasting, there were large-scale drilling equipment (usually the Soviet Ty-20 deep-hole drilling rig) and air compressors. In the absence of such equipment, the Sixth Metallurgical Construction Company launched the masses, vigorously engaged in three combinations, tried their own modified 01-38 small drilling rig, and cooperated with deep hole pot blasting to blast blasting stones of different depths. (up to a maximum depth of 13 meters), the same can make a big blast. In stone formation of a certain factory, it has been widely used, and each blasting volume is about 50,000 cubic meters. Original plan for June