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本文讨论一次大震或强震序列发生以后,由于存在发生强余震和晚期强余震的危险,因此在余震区及其附近进行城市居民区迁址或重要工程建设时,应该考虑强震序列影响的必要性,并以历史资料和近年发生的地震事件为例,说明它们的危害性。文中以唐山地震序列作为典型震例,分析和研究大震后强余震在时间与空间上的演变特点,今后发生晚期强余震的可能性以及该区在工程建设中需注意的问题。
This paper discusses a large earthquake or strong earthquake sequence occurs, because of the occurrence of strong aftershocks and late strong aftershocks danger, so in and around the aftershocks of urban settlements relocation or construction of important projects, should consider the impact of strong earthquake sequence Necessity, and historical data and earthquake events in recent years as an example to illustrate their dangers. Taking Tangshan earthquake sequence as a typical earthquake example, the paper analyzes and studies the evolvement characteristics of strong aftershock in time and space after the large earthquake, the possibility of late strong aftershock and the problems that should be noticed in this area.