今年初,三冶机电公司外钱队在线路工程中,普遍应用爆破打洞法进行电杆坑施工。这种施工方法,在各季冻土层上使用,效果特别显著,既不用挖,回填土也少,大大加速了施工进度,减轻了工人体力劳动,深受欢迎。现将土质坑的施工方法,成型情况和初步效果简介如下: At the beginning of this year, Sanye Electromechanical Corporation’s foreign money team generally used blasting and hole-drilling to construct pole pits in line projects. This kind of construction method is particularly effective in the use of permafrost layers. It does not require digging and has less backfill soil, which greatly accelerates the construction schedule and reduces the manual labor of workers. The construction methods, forming conditions and preliminary results of soil pits are summarized below: