摘要
在深港西部通道爆炸挤淤工程中,爆破震动对附近居民有影响,因而一次起爆总药量受到限制。在分析研究爆炸排淤振动速度和振动频率衰减特性的基础上,采用了微差爆破、减小侧爆规模及震动监测和严格的质量控制等技术措施,成功地解决了施工中爆破震动问题。钻孔检测和物探结果表明,堤身落底达到设计要求,微差爆破等以前未用过的技术措施没有影响施工质量。
In the toe-shooting project in western corridor,the charge mass of one-kick detonation was limited due to the influence of blasting vibration on civil buildings.On the basis of studying the characteristics of velocity and frequency of blasting vibration from toe-shooting method,the problem of blasting vibration was successfully solved by means of millisecond blasting,restricted side-blasting scale,blasting vibration monitoring and strict quality control.The results of borehole detection and geophysical prospecting showed that the dyke had sited on the required base,and such technological measures as millisecond blasting which was never used in previous projects didn't influence the quality of the dyke constructed by toe-shooting method.
出处
《工程爆破》
2004年第2期73-76,共4页
Engineering Blasting
关键词
爆炸挤淤法
徽差爆破
爆破震动
Toe-shooting method
Millisecond blasting
Blasting vibration
