吴晓龙
WU Xiao-long(The Three Gorges Project Command of Hydropower Troop of Armed Police,Yichang 443133,Hubei,China)

• 1:武警水电三峡工程指挥部 湖北宜昌443133

摘要(Abstract)：

三峡工程双线五级船闸开挖采用了综合控制爆破技术,施工中严格控制超挖和爆破震动,确保闸槽直立墙和高边坡的稳定。本文阐述了船闸闸槽开挖的爆破方案及施工方法,重点论述了影响爆破效果的诸因素及对策;并以全过程大量监测数据表明,在距爆区10m处质点振速控制在10cm/s以下,岩壁面成型较好,边坡超挖控制在20cm以内,残留的半孔率80%以上,闸槽开挖爆破施工质量优良。
Blasting technique with comprehensive control was employed in the excavation of ship-lock in Three Gorges Project.In the operation the overbreak and vibration intensity were strictly controlled in order to guarantee the standing walls of ship-lock and high slope in stability.The present paper discussed the blasting design and the way of the construction in the excavation of ship-lock.The factors influencing the effect of blasting together with the treatments were investigated and discussed in detail.Large amount of monitoring data collected in the whole operation showed that the vibration velocity of the particle 10m away from blasting source had been controlled in the limitation of below 10cm/s,with the overbreak of the slope in the limitation of 20cm.The wall surface at left bank after blasting got the residual semi borehole rate over 80%.A high quality construction was achieved in excavation of ship-lock.

关键词(KeyWords)： 三峡工程;船闸;深槽开挖;控制爆破
Three Gorges Project; Ship lock; Deep chamber excavation; Controlled blasting

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作者(Author): 吴晓龙
WU Xiao-long(The Three Gorges Project Command of Hydropower Troop of Armed Police,Yichang 443133,Hubei,China)

参考文献(References)：

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• 〔2〕纪云生 水利水电工程施工组织设计手册2[M] 北京:中国水利水电出版社,1997
• 〔3〕王青屏,陈太为 三峡工程永久船闸直立墙深槽开挖综合爆破技术[J] 工程爆破,2003,9(1):9-15