徐成光
XU Cheng-guang(Sinohydro Engineering Bureau 7

• 1:中国水利水电第七工程局

摘要(Abstract)：

湖南柘溪水电站扩机项目进水口挡水岩坎爆破拆除,具有爆破环境和地质、地形条件复杂,爆破规模大、风险高、工期紧迫等特点。通过采用纵向分层、水平向分区拆除程序;梯段弱松动爆破和强松动爆破相结合,岩坎两端采用光面爆破;孔内、孔外延时起爆,以及严密的安全防护等一系列精细爆破关键技术,最终一举成功。为今后类似工程积累了宝贵经验。
The engineering environments,geological features and terrain conditions are complicated for demolition blasting of water retaining rock-step of water inlet of the Zhexi hydroelectric station enlargement project in Hunan province.The project also has the characteristics of large-scale blasting,high risk and pressing construction periods etc.A series of procedures for precise demolition blasting are as follows: demolition procedures including vertical delaminating and horizontal zoning,weak loosening blasting combined with strong loosening blasting for bench blasting,smooth blasting of both ends of the rock-step,delay blasting inside and outside holes,rigorous safety protection and so on.All of them will contribute valuable experience towards the similar projects to be built in the future.

关键词(KeyWords)： 扩机水电站;挡水岩坎;拆除;精细爆破
Hydroelectric station enlargement;Water retaining rock-step;Demolition;Precise blasting

Abstract:

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基金项目(Foundation):

作者(Author): 徐成光
XU Cheng-guang(Sinohydro Engineering Bureau 7

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)中华人民共和国电力行业标准.水电水利工程爆破安全监测规程(DL/T 5333-2005)[S].北京:中国电力出版社,2006.
• (4)张文煊,刘美山.大型水电站围堰及岩坎爆破拆除中的安全防护问题研究[J].工程爆破,2008,14(4):76-81.
• (5)中国水利发电工程工程地质卷[M].北京:中国电力出版社,2000.
• (6)尹强,徐成光.爆刻技术在岩壁梁部位开挖中的研究与应用[J].工程爆破,2008,14(2):25-28.