任国龙
REN Guo-long(The 8th Department of Hebei Province Water Conservancy Bureau

• 1:河北水利工程局八处

摘要(Abstract)：

循环水泵房为核岛反应堆循环水取水建筑物,泵房基坑为深基坑,其西侧和南侧为基岩,其余部分位于海滩涂的回填层上,在开挖的同时,首先对软基部分进行支护,然后进行爆破开挖。爆破环境极其复杂,爆破振动监测对象主要为核岛和循环水管沟新浇大体积砼及基坑支护体系。在施工中针对以上问题,成功采用控制爆破技术,确保了基坑安全,并如期完工。
The circulating water pump house is the water-intake building of the nuclear island reactor circulating water system.The pump house foundation pit is very deep.Its west and south parts are bedrocks,and the other parts are located on backfilling layer of sea beach.While being excavated,the soft-base shall be supported at first,and then the blasting excavation can be performed.The blasting circumstances are extremely complicated;the main blasting monitoring objects are the young mass concrete and the surrounding supporting system of nuclear island and circulation water system piping.Directed to above mentioned problems during the construction,control blasting technology was adopted successfully to ensure the safety of the foundation pit.The project was completed on schedule.

关键词(KeyWords)： 基坑开挖;爆破振动;预裂;减振孔
Foundation pit excavation;Blasting vibration;Pre-splitting;Damping hole

Abstract:

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作者(Author): 任国龙
REN Guo-long(The 8th Department of Hebei Province Water Conservancy Bureau

参考文献(References)：

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