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核电厂扩建工程设计地震动参数校核研究
引用本文:李丽梅,刘建达,黄永林.核电厂扩建工程设计地震动参数校核研究[J].地震学刊,2009(1):57-62.
作者姓名:李丽梅  刘建达  黄永林
作者单位:江苏省地震工程研究院,南京210014
摘    要:核电工程从预可行性研究到正式施工设计,往往有一个很长的周期。以泰山核电二期工程建设项目为例,地震动参数确定是在十多年前完成的,因此其设计地震动参数的校核工作应当在吸收这十多年来我国在活动构造识别、地震活动的不均匀性处理、地震区带划分、潜在震源区的识别和参数确定、地震动衰减等方面的最新研究成果的基础上进行。研究结果表明,新增的地震地质资料进一步补充了原工作报告对地震地质研究的结论,地震的活动特征则没有发生根本变化;工作区内破坏性地震的平均震源深度约为12km,与全国平均震源深度(约为15km)有差别。在对工作区地震地质、地震活动背景最新研究的基础上,考虑本地区有代表性的不同潜在震源区的划分方案,分别采用对应的地震动参数衰减关系进行地震危险性概率分析计算,校核后综合确定秦山核电二期扩建工程厂址的极限安全地震动SL-2为0.15g,这与1990年的结论一致。本文提出的核电扩建工程地震动参数校核工作的技术路线,可供类似的重大工程地震动参数校核参考。

关 键 词:地震安全性评价  核电厂  地震动参数  多方案比较法

Reserch on the Check of Design Ground Motion Parameters for Extension of a Nuclear Power Plant
LI Li-mei,LIU Jian-da,HUANG Yong-lin.Reserch on the Check of Design Ground Motion Parameters for Extension of a Nuclear Power Plant[J].Journal of Seismology,2009(1):57-62.
Authors:LI Li-mei  LIU Jian-da  HUANG Yong-lin
Institution:(Institute of Earthquake Engineering of Jiangsu Province, Nanjing 210014, China)
Abstract:To build a nuclear power plant, it is a long time from pre-feasible studies to equipment design, manufacture and final installation. Taking second period construction program of Qinshan Nuclear Power Plant as an example, its ground motion parameters were determined 14 years ago. So, it should be checked based on the lasted seismic scientific data and technology, which include the methods to identify active tectonics, process inhomogeneity of seismic activity, divide seismic zone and belt, select the parameters for potential seismic source zone, and determine acceleration attenuation law. The conclusions about seismogeology and seismic activity in the report of seismic safety evaluation for Qinsban Nuclear Power Plant have been confirmed by new data. Earthquake activity in the region had no remarkable change. The average depth of the destructive earthquake occurred in the area is about 12 km, slightly less than 15 km in whole China. To integrate different standpoints, several different schemes were applied to evaluate seismic risk by statistical analysis of related acceleration attenuation laws. The safety limit of ground motion is 0.15 g, which is synthesized by several calculation schemes and agrees well with the former result made in "90 Report". The checking work in this paper sets a model for other similar works.
Keywords:seismic safety evaluation  nuclear power plant  ground motion parameters  multi-scheme comparison method
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