| 复杂环境下11层框架楼房拆除爆破 |
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| 作者单位： | ;1.北京科技大学土木与环境工程学院;2.辽宁工程技术大学工程爆破研究所;3.北京矿冶研究总院;4.内蒙古康宁爆破有限责任公司 |
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| 摘 要： | 介绍了复杂环境下47.1m高楼定向拆除爆破的工程实例。结合待爆楼房结构特点和周围环境制定了爆破方案。对前厅墙体、立柱和24层楼梯、电梯进行局部预拆除,采用三角形爆破切口和"大把抓"与四通结合的复式交叉爆破网路,并通过采用延时起爆技术、铺设沙袋以及开挖减振沟等措施,显著降低了爆破振动和塌落振动,取得了理想的爆破效果,可为此类复杂环境下的高楼拆除爆破提供参考。
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| 关 键 词： | 复杂环境 拆除爆破 安全防护 |
DEMOLITION BLASTING OF A 11-STOREY FRAME BUILDING UNDER COMPLICATED ENVIRONMENT |
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| Affiliation: | ,School of Civil and Environmental Engineering,University of Science and Technology Beijing,Engineering Blasting Institute of Liaoning Technical University,Beijing General Research Institute of Mining and Metallurgy,Inner Mongolia Kangning Blasting Co.,Ltd. |
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| Abstract: | The engineering example of demolition blasting of a 47.1m high frame building under complicated environment was introduced.The blasting scheme was made based on the structural characteristics of buildings and the surrounding environment.The wall of antechamber,columns and 24层楼梯、电梯进行局部预拆除,采用三角形爆破切口和"大把抓"与四通结合的复式交叉爆破网路,并通过采用延时起爆技术、铺设沙袋以及开挖减振沟等措施,显著降低了爆破振动和塌落振动,取得了理想的爆破效果,可为此类复杂环境下的高楼拆除爆破提供参考。The engineering example of demolition blasting of a 47.1m high frame building under complicated environment was introduced.The blasting scheme was made based on the structural characteristics of buildings and the surrounding environment.The wall of antechamber,columns and 24 flights of stairs and elevators were removed before blasting,the triangular cut was designed,and the "large packing" combined with four way pipe were used to establish the double cross blasting network.Through the delay blasting technology,laying sandbags and damping ditch excavation and so on,the blasting vibration and collapse vibration were significantly reduced,and the ideal blasting effect was achieved.It provided a reference for buildings demolition blasting under complicated environment. |
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| Keywords: | Complicated environment Demolition blasting Safety protection |
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