王彦荣;魏东;
WANG Yan-rong,WEI Dong(Xigou Operation Area of Longtai Mining Group,Jiayuguan 735100,Gansu,China)

• 1:甘肃龙泰矿业集团公司西沟矿作业区
• 2:甘肃龙泰矿业集团公司西沟矿作业区 甘肃嘉峪关735100
• 3:甘肃嘉峪关735100

摘要(Abstract)：

以两个工程为例,介绍了在城镇基坑开挖工程中采用了大孔径深孔爆破技术。针对具体情况开切割槽,使用体积较小的潜孔钻凿大孔,设计合理的爆破参数,采用非电微差起爆网路和有效的安全防护措施。工程实践证明,只要爆破参数合理、安全防护得当,大孔径深孔爆破可以在城镇地区开挖基坑中推广应用。
Taking two of projects as examples,the paper discussed the technology of large diameter borehole blasting applied in the excavation of footing groove in city.Regarding the actual conditions,the blasting,detonated by non-electric millisecond igniting network,was performed by the use of cutting slot,big drilling hole with small volume and designed reasonable parameters under effective protection measures.The practice of the engineering suggested that blasting technology could be popularized for footing groove excavation in city provided that the blasting parameters and safety protection measures be determined properly.

关键词(KeyWords)： 基坑开挖;大孔径炮孔;控制爆破
Footing groove excavation;Large diameter borehole;Controlled blasting

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 王彦荣;魏东;
WANG Yan-rong,WEI Dong(Xigou Operation Area of Longtai Mining Group,Jiayuguan 735100,Gansu,China)

参考文献(References)：

• (1)中华人民共和国国家标准.爆破安全规程(GB6722-2003)[S].北京:中国标准出版社,2004.
• (2)刘殿中.工程爆破实用手册[M].北京:冶金工业出版社,1999.
• (3)王洪森,颜事龙,刘辉,等.复杂环境下露天深孔爆破的若干技术[J].工程爆破,2005,11(2):21-24.