一、前言钢筋混凝土结构物的拆除,切割等施工方法的研究在最近三、四年间的进展是非常惊人的,特别是原子能发电站对防护墙拆除施工方法的研究。例如,化学方法有用静破碎剂施工法;热处理方法有表面熔化以及火焰喷射施工法;机械方法有金刚切割器施工法;电气方法 I. INTRODUCTION The research on the methods of demolition and cutting of reinforced concrete structures during the last three or four years has been extremely alarming, especially the study on the method of demolition of protective walls by atomic power stations. For example, the chemical method has a static cracking agent construction method; the heat treatment method has a surface melting and flame spray construction method; the mechanical method has a diamond cutter construction method; and the electrical method