80m高的钢筋混凝土烟囱定向爆破拆除  

Demolition of an 80m reinforced concrete chimney by direction blasting

作　　者：张学东[1] 沈古成[1] 李军[1] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038

出　　处：《河北工程大学学报（自然科学版）》2009年第4期96-98,共3页Journal of Hebei University of Engineering:Natural Science Edition

摘　　要：本文介绍了采用定向爆破法成功地拆除了复杂环境下高80m的钢筋混凝土烟囱的具体工程实例。通过对钢筋混凝土烟囱结构分析,利用压杆原理设计爆破切口参数,采用交叉复式网路确保其稳定性和安全性,并详细介绍了爆破烟囱的定向方法及安全防护措施。爆破后,烟囱完全按设计方向倾倒,为同类工程参考和借鉴。This paper presents a successful example of an 80 m reinforced concrete chimney by directional blasting method in a complex enviromnent. Through the structural analysis of the chimney, strut principle was used to design parameters of blasting cut and the parallel closed network was used for stability and safety. The paper also introduces the directional blasting method of the chimney and safety protection measures to reduce vibration and the second touchdown in detail. After the blasting, the chimney crashed down by design, which provides a good example for the similar engineering.

关 键 词：钢筋混凝土烟囱 爆破切口 爆破地震波 飞石控制 

分 类 号：TU746.5[建筑科学—建筑技术科学]