建筑物拆除爆破对临近危楼的振动影响  

Vibration Influence of Demolition Blasting on nearby Dangerous Buildings

作　　者：张立[1] 孙跃光[1] 张明晓[1] 

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《爆破》2007年第4期92-95,共4页Blasting

基　　金：安徽省高校科技创新团队(TD200705)资助项目

摘　　要：爆破振动测试是评估爆破对周边环境影响的一项重要工作。在对60m高钢筋混凝土烟囱、框架式锅炉房和锅炉房附楼的2次拆除爆破中,实时监测了距爆区最近的5层砖结构危楼不同处的振动速度,监测表明拆除爆破未对该楼造成损伤,为客观公正评估本次爆破影响提供了依据。进一步分析监测数据和波形曲线得出:每段延期爆破与振动波曲线相对应,最大振动速度出现在锅炉房触地时刻;采用多道沙土墙和减振沟后烟囱触地冲击得以缓冲,振速较小;振动波传播受高程影响较大,一定高程对振动强度有放大作用等结论。The blasting vibration test was a key job to valuate the influence of the peripheral environment, In the 60 m high reinforced concrete chimneys,frame type boiler room and boiler room Annex tow of the demolition blasting. Taking real-time monitoring of the blasting area from the nearby five-storey brick structure at different vibration velocity of dangerous buildings. And the monitoring did not indicate that the demolition blasting floor cause injuries, as an objective and fair assessment of the impact of the blasting provide a basis, Further analysis of monitoring data and waveform curve has drawn some conclusions：Each extension blasting vibration wave curve was related with the maximum of vibration velocity in the boiler room appeared to contravene the moment;after applying multi-channel sand walls and damping ditch, a chimney has been inconsistent with the impact buffer,vibration velocity smaller;the vibration wave propagation got greater impact on the geight, and a certain height would give birth to amplification on the vibration strength, and so on.

关 键 词：拆除爆破 振动速度 振动影响 主振频率 

分 类 号：TD235.46[矿业工程—矿井建设]