首页 | 本学科首页   官方微博 | 高级检索  
     检索      

核电厂地震安全性评价衰减关系影响分析
引用本文:荆旭,常向东.核电厂地震安全性评价衰减关系影响分析[J].震灾防御技术,2014,9(4):813-820.
作者姓名:荆旭  常向东
作者单位:中国地震局地球物理研究所,北京 100081 ; 环境保护部核与辐射安全中心,北京 100082;环境保护部核与辐射安全中心,北京 100082
基金项目:国家重大科技专项子课题“核电厂工程场地地震影响及其适应性评价技术研究”(2013ZX06002001-09)
摘    要:地震危险性分析中的不确定性处理和表征,一直是核电厂厂址地震安全性评价中倍受关注的重要问题,尤其是日本福岛核事故后,无论是确定核电厂厂址的设计基准地震动,还是进行核电厂地震风险评价,都更加重视地震危险性分析中的不确定性.本文通过理论分析重点说明了衰减关系的不确定性,包括标准差和截断水平对核电厂地震安全性评价的影响,并在此基础上,通过算例和讨论说明了概率性方法截断水平的选取问题,探讨了现行确定性方法和概率性方法在截断水平选取上的差异.分析计算结果表明,在地震活动较弱的区域,概率性方法截断水平为3,确定性方法截断水平为0的现行做法是恰当的.但是,对于发震构造大震复发间隔较小的区域,为了使二者在超越概率方面协调,恰当提高确定性方法的截断水平更为合理.

关 键 词:地震危险性分析  不确定性  衰减关系
收稿时间:2013/12/25 0:00:00

Influence of Attenuation Relationship to Seismic Hazard Analysis for Nuclear Power Plant
Jing Xu and Chang Xiangdong.Influence of Attenuation Relationship to Seismic Hazard Analysis for Nuclear Power Plant[J].Technology for Earthquake Disaster Prevention,2014,9(4):813-820.
Authors:Jing Xu and Chang Xiangdong
Institution:Jing Xu;Chang Xiangdong;Institute of Geophysics,CEA;Nuclear and Radiation Safety Center,MEP;
Abstract:How to characteristic and deal with uncertainty is an important and interested problem in seismic hazard assessment (SHA),especially after Fukushima nuclear accident.Nuclear utility and regulatory agency took more attention to uncertainty either in determining seismic design ground motion or risk assessment for nuclear power plant (NPP).In this paper,we illuminated the standard deviation and epsilon of attenuation relationship (AR) can significantly influence the SHA result by theoretical analysis,showed difference in nature between deterministic (DSHA) and probabilistic (PSHA) method on truncate level of AR.Analysis and example presented in the paper proved that truncate level for PSHA equals to 3 and 0 for DSHA in low seismicity area is adequate.It is suitable to raise truncate level where recurrent interval of large earthquake is relatively short.
Keywords:SHA  Uncertainty  Attenuation relationship
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《震灾防御技术》浏览原始摘要信息
点击此处可从《震灾防御技术》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号