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7月1日,冶金部长沙有色冶金设计研究院在长沙用定向爆破法拆除一座19.2米高、175吨重钢筋混凝土框架,紧邻2.85米远建筑安然无恙。这是一座12×12米平面呈田字形的冲天炉框架。主框架高19.2米,主要由五根钢筋混凝土柱、一根砖柱、
On July 1st, the Changsha Nonferrous Metals Design and Research Institute of the Ministry of Metallurgy used Changsha’s directional blasting method to demolish a reinforced concrete frame measuring 19.2 meters high and 175 tons in weight. The structure immediately adjacent to the 2.85-meter-long structure was unblemished. This is a 12 × 12 meter flat-shaped cupola frame. The main frame is 19.2 meters high and consists of five reinforced concrete columns and one brick column.