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.
出处
《工程爆破》
北大核心
2013年第5期35-37,57,共4页
Engineering Blasting
关键词
钢筋混凝土烟囱
爆破拆除
定向爆破
前冲
触地振动
Reinforced concrete chimney
Blasting demolition
Directional blasting
Forward rush
Touchdown vibration
