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| 洪家渡水电站2号导流洞进水口岩埂爆破拆除 | |
| 引用本文： | 刘美山,李永池,张正宇,吴新霞,张文煊.洪家渡水电站2号导流洞进水口岩埂爆破拆除[J].工程爆破,2004,10(1):22-25. |
| 作者姓名： | 刘美山 李永池 张正宇 吴新霞 张文煊 |
| 作者单位： | 1. 中国科技大学,合肥,230027;长江科学院,武汉,430010 2. 中国科技大学,合肥,230027 3. 长江科学院,武汉,430010 |
| 摘 要： | 洪家渡水电站 2号导流洞进水口岩埂距需保护的闸门仅 9m ,堰外水位高于堰顶 ,岩埂表面及前部存在大量松碴 ,此外拆除岩埂的工期短。在上述困难条件下 ,利用垂直和倾斜的深孔以及微差爆破技术 ,将岩埂一次爆破拆除。本文论述了爆破方案确定、爆破参数选择、起爆网路设计以及爆破安全措施。同时介绍了有关此项工程的经验和体会。 |
| 关 键 词： | 导流洞 围堰 岩埂 拆除爆破 |
| 文章编号： | 1006-7051(2004)01-0022-04 |
| 修稿时间： | 2003年10月10 |
BLASTING DEMOLITION OF ROCK-DYKE AT INLET OF NO 2 WATER-DIVERSION TUNNEL IN HONGJIADU HYDROPOWER STATION |
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| LIU Mei-shan.BLASTING DEMOLITION OF ROCK-DYKE AT INLET OF NO 2 WATER-DIVERSION TUNNEL IN HONGJIADU HYDROPOWER STATION[J].Engineering Blasting,2004,10(1):22-25. | |
| Authors: | LIU Mei-shan |
| Affiliation: | LIU Mei-shan~ |
| Abstract: | In Hongjiadu Hydropower Station,the rock-dyke at the inlet of No.2 water-diversion tunnel is only 9m away from a lock gate necessary to be protected.The water level outside the cofferdam is higher than the top of the cofferdam.There are a lot of rock residues on surface and front of the rock-dyke.In addition,there is a short time limit for demolition of the rock-dyke.Under above-mentioned difficult conditions,the rock-dyke is demolished by once-through millisecond blasting with vertical and inclined deep-holes.In this paper,the determination of blasting plan,the selection of blasting parameters,the design of firing circuit and safety precautions are expunded.At the same time,the experience and knowledge about this project are introduced. |
| Keywords: | Water-diversion tunnel Cofferdam Rocd-dyke Demolition blasting |
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