土工基础

›› 2012, Vol. 26 ›› Issue (1): 30-32.

• 工程实录 • 上一篇    下一篇

核电站核岛基础爆破开挖减震控制

黄富强1，张大岩2，夏 祥3   

  1. (1.中广核工程公司，深圳 518031；2.中广核陆丰核电有限公司，广东汕尾 516081;3.中国科学院武汉岩土力学研究所，武汉 430071)
  • 收稿日期:2011-09-26 出版日期:2012-02-20 发布日期:2012-03-23
  • 作者简介:黄富强,男，1971年生，土建工程师，主要从事核电站土建施工质量控制及管理工作。

Blasting Vibration Control of Foundation Pit Excavation in Nuclear Unit at a Nuclear Power Plant

HUANG Fuqiang1，ZHANG Dayan2，XIA Xiang3   

  1. (1.China Nuclear Power Engineering Company Ltd.，Shenzhen 518031，China；2.Lufeng Nuclear Power Ltd., Shanwei Guangdong 516081，China;3.Institute of Rock and Soil Mechanics，The Chinese Academy of Sciences，Wuhan 430071，China)
  • Received:2011-09-26 Online:2012-02-20 Published:2012-03-23

摘要： 核电站基础爆破开挖时，必须控制爆破振动效应，确保预留基岩及附近建筑物和构筑物的安全。以一在建核电站基础爆破施工及振动控制为基础，介绍了爆破振动监测过程和减振方法。现场爆破实验结果表明，采用布设减振孔的方法可以减小爆破振动效应。振动效应随减振孔孔径增大而减小，随孔距增大而增大，并且孔距对减振效果的影响要大于孔径的影响，施工中应优先选择减小减振孔孔距的方法。

关键词: 爆破, 减振孔, 核电站, 基础开挖, 振动

Abstract: In foundation excavation of a nuclear power plant, the blasting vibration should be controlled strictly in order to ensure the safety of bedrock and nearby buildings and structures. The authors presented the whole process of vibration monitoring and vibration reduction method based on the foundation excavation of the nuclear island. The in situ blasting tests reveal that shock absorption holes can reduce the blasting vibration. The vibration velocities of rock particles increase with hole spacing, and decrease with hole diameter. It is more efficient in practice to reduce blasting vibration by reducing shock absorption hole spacing than by extending hole diameter.

Key words: blasting, shock absorption hole, nuclear power plant, foundation excavation, vibration