【摘要】 发震断层地震地表破裂的研究为水坝等工程提供了理论基础和依据,对防震减灾具有十分重要的工程意义和理论价值。本文联系Mindlin解析式的原理与地震地表破裂的机理,将Mindlin解应用到地震地表破裂永久位移的估计中,并结合地震危险性分析方法、中国第四代地震区划图的潜在震源区参数及断层模型,提出了一个发震断层附近永久位移的估计方法。以大岗山水电站工程为例,结合研究区域的地震危险性分析及距离场点最近的活动断层-磨西断裂的地震地质资料和地震活动性资料,对断层有限范围内的地表永久位移场进行了数值模拟,其计算结果显示的规律性与实际工程基本一致。更多还原

【Abstract】 Study on sesmic surface rupture of causative faults provides a theoretical basis and foundation for engineering seismology and has great engineering significance and theoretical value to earthquake preparedness and disaster reduction. In this paper,based contaction between Mindlin solution theory and suface rupture mechianism a approach to evaluate permanent displacement near causative faults is presented,which is based on Mindlin solution,the parameters of potential source zone affirmed by the 4thseismic zoning map of China,fault model and approach to seismic risk analysis. The proposed approach is applied to Dagangshan hydropower station,and pernent displacement field of surface is simulated in a limited range near Moxi fault by using the results of seismic risk analysis and the data of seismic geology and characteristics of seismic activity. The results coincided with the practical ones.更多还原