徐成光;
XU Cheng-guang(Sinoh ydro Engineering Bureau 7 Co.,Ltd.,Pi County 611730,Chengdu,China)

• 1:中国水利水电第七工程局

摘要(Abstract)：

针对向家坝电站地下厂房开挖爆破振动控制严格的特点,通过采用合理的开挖施工程序和施工方法、精细的爆破技术、严格的爆破振动观测和围岩开挖影响深度检测等一系列主动控制的关键技术,达到了由爆破和围岩卸荷造成的影响深度在0.2⁰.9m之间,地下厂房顶拱变形仅12.4mm、边墙变形仅6.68mm的新纪录,爆破振动控制效果优良。
Owing to the need of strict control of excavation blasting vibration in the construction of underground powerhouse of Xiangjiaba hydroelectric station,the excavation was carried out with a high level control of blasting vibration through a series of key control techniques such as the optimized excavation procedure and construction method,the precise blasting technology,the strict vibration monitoring and the influencing depth of rock excavation.The adoption of such key control techniques wrote a new record of influencing depth of 0.2 to 0.9m caused by unloading rock and blasting operation,a vault deformation only being 12.4mm and a wall deformation merely 6.68mm,and led to a good effect of blasting vibration control.

关键词(KeyWords)： 水电站;地下厂房;开挖爆破;振动控制;监测;精细爆破
Hydroelectric station;Underground powerhouse;Blasting excavation;Vibration control;Monitoring;Precise blasting

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 徐成光;
XU Cheng-guang(Sinoh ydro Engineering Bureau 7 Co.,Ltd.,Pi County 611730,Chengdu,China)

参考文献(References)：

• [1]汪旭光,于亚伦,刘殿中.爆破安全规程实施手册[M].北京:人民交通出版社,2004.
• [2]张正宇,张文煊,吴新霞,等.现代水利水电工程爆破[M].北京:中国水利水电出版社,2003.
• [3]长江水利委员会长江科学院.水电水利工程爆破安全监测规程(DL/T5333-2005)[S].北京:中国电力出版社,2006.
• [4]李新,杨兴国,李洪涛,等.地下洞室梯段爆破振动效应分析[J].工程爆破,2008,14(4):9-12.
• [5]陈祖安.中国水利发电工程工程地质卷[M].北京:中国电力出版社,2006.