冻土施工,采用爆破方案时,其关键环节是凿炮眼。炮眼直径不可太大,否则,装药后炮眼不易压实,放炮时容易出现空炮,起不到爆破作用。在冻土层上,用手工凿直径和深度都比较合适的炮眼,是个既费力、费工又难以保证质量的工作。为解决这一难题,我指挥部李春祥同志搞出冻土射孔器的方案,油建二大队按图制作。冻土射孔 Permafrost construction, the use of blasting program, the key link is chisel bores. The diameter of the hole should not be too large, otherwise, the hole is not easy after the charge of compaction, blasting is prone to air cannons, play the role of blasting. On the permafrost, manual drilling of suitable diameter and depth of the blasthole is a laborious, laborious and difficult to ensure the quality of the work. In order to solve this problem, Comrade Li Chunxiang commanded the program of permafrost perforator. Frozen soil perforation