工程爆破

2001, (04) 76-82

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碾压混凝土围堰爆破拆除震动安全分析
ANALYSIS ON VIBRATION SAFETY IN BLASTING DEMOLITION OF ROLL COMPACT CONCRETE COFFERDAM

燕琳,李世海,方正,陈力
YAN Lin,LI Shi hai,FANG Zheng,CHEN Li (Institute of Mechanics,Chinese Academy of Sciences, Beijing 100080,China)

摘要(Abstract):

在高坝洲水电站下游纵向碾压混凝土围堰爆破拆除中进行了爆破测震试验。对现场实测爆破震动波形的研究表明 ,采用使堰体翻转的爆破拆除方案时 ,选用条形间断装药、雷管分段延时起爆、隔震孔、预裂缝等技术措施 ,完全能够降低大爆破带来的结构振动 ,确保相邻堰体的安全
In blasting demolition of a downstream longitudinal roll compact concrete cofferdam in Gaobazhou Hydroelectric Power Station,the tests of monitoring blasting vibration were conducted The research on the blasting vibration waves measured in test site has shown that the structural vibration from a mass blasting can be fully dampened and the safety of adjoined cofferdam body ensured by selection of some technological measures such as decked charging,delayed firing,vibration separating holes and presplitting cracks when a blasting demolition scheme of tilting the cofferdam body is adopted

关键词(KeyWords): 碾压混凝土;爆破拆除;延发爆破;震动监测
Roll compact concrete (RCC); Blasting demolition; Delay firing; Vibration monitoring

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作者(Author): 燕琳,李世海,方正,陈力
YAN Lin,LI Shi hai,FANG Zheng,CHEN Li (Institute of Mechanics,Chinese Academy of Sciences, Beijing 100080,China)

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