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《Engineering Blasting》 2009-01
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DEMOLITION OF A 210M-HIGH REINFORCED-CONCRETE CHIMNEY BY DIRECTIONAL BLASTING

LI Dan-qing,YU Cheng,TANG Yue-hua,LI Jun(Shanghai Blasting Technology Engineering Co.,Ltd.,Shanghai 200125,China)  
A directional blasting method was introduced to demolish a 210m-high chimney of reinforced concrete.Practices and techniques regarding the selection of blasting cut,the determination of blasting parameters,the design of ignition network as well as the pretreatment and safety precautions were presented for precise control of collapse direction of the chimney.Besides,the feasibility of directional blasting demolition of the 210m-high chimney was also explored.The demolition saw a very successful collapse in directional blasting demolition of the 210m chimney,with the top of the chimney falling into the area just 1.5m away from the central line of collapse.
【CateGory Index】: TU746.5
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