【摘要】 采用双向折叠控制爆破技术,成功拆除100m钢筋混凝土烟囱,为国内成功实施首例。采用双向折叠控制爆破技术拆除高耸钢筋混凝土烟囱有2个关键技术问题:1)上部切口位置;2)上下切口起爆时差;在工程实践中,上部切口位置30m,上下切口时差2.2s,爆破后折叠倒塌及破碎效果都很理想。更多还原

【Abstract】 A 100 meter high chimney with reinforced concrete structure was demolished by means of a bidirection folding blasting technology. Everything went exactly as planned. It is the first and sucessful example in China. To achieve two-folding collasping, the following key questions are solved:1)The location of the upper cut;2)How long was the time between the upper and the lower cut. In engineering:1)the upper cut at 30 m; 2)Δt =2.2 s.The folding collasping postures were perfect and the chimney was fully fragmented.更多还原