外加固砖烟囱爆破拆除前冲事故分析

Analysis of Forward Setting Accident in External Reinforcement Brick Chimney Explosive Demolition

高耸建筑物拆除过程中,前冲距离的准确计算可确保拆除爆破的安全顺利进行。针对外加固砖烟囱爆破过程中出现的前冲事故进行分析,认为其前冲距离不应单纯按纯砖烟囱进行计算,而应从烟囱的本身结构特点、倒塌过程类似钢筋混凝土烟囱的特性并考虑场地因素,按混凝土烟囱和纯转烟囱综合计算前冲距离。

In high-rise building demolition,the accurate calculating of forward setting distance could ensure the blasting safety.Forcus on the brick chimney with extenal reinforcement,it is thought that the forward setting distance shouldn＇t be calculated as pure brick chimney but from the structure characteristics of the chimney itself,collapse process characters of similar reinforced concrete chimney and the factors of site,and the accurate forward setting distance should be calculated comprehensively as concrete chimney and pure brick chimney.