100m高钢筋混凝土烟囱定向爆破拆除  

DIRECTIONAL BLASTING DEMOLITION OF A 100-METER-HIGH REINFORCED CONCRETE CHIMNEY

作　　者：毕卫国[1] 王超[1] 李媛媛[1] 李文涛[1] 孙明旭[1] 

机构地区：[1]山东省土木工程防灾减灾重点实验室 山东科技大学,山东青岛266590

出　　处：《工程爆破》2013年第5期35-37,57,共4页Engineering Blasting

摘　　要：采用定向控制爆破技术成功拆除了100m高钢筋混凝土烟囱。预先用爆破法开设定向窗和减荷槽,在保证余留截面稳定性的前提下对切口范围内的支撑体实施爆破,使烟囱按预定方向倒塌。爆破效果表明,松软农田有利于减小烟囱前冲、降低触地振动,可为同类工程提供借鉴。A 100m reinforced concrete chimney was demolished successfully by directional blasting tech- nique. In order to make the chimney collapsed according to the designed direction, the directional windows and load reducing groove were pretreated and then the supporting body within the range of cut was blasted based on the stability of remaining sections was insured. The blasting effect showed that the soft farmland was helpful to reduce forward rush and touchdown vibration of the chimney. It could provide a reference for similar projects.

关 键 词：钢筋混凝土烟囱 爆破拆除 定向爆破 前冲 触地振动 

分 类 号：TU746.5[建筑科学—建筑技术科学]