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本文将山西地震带与燕山地震带交汇部位的局响区分为6个面积单元进行研究.从该区中强地震及近年来小震活动规律分析,认为本区第四活跃期还需15—20年才能结束,目前尚缺2次6级左右地震.进入八十年代以后,本区小震活动已打破原来平静时期的正常规律,近年来要注意突发或孤立型地震的发生.根据综合分析结果,认为延怀盆地、蔚广盆地为第一类危险区;怀安、天镇一带及大同、代县一带为第二类危险区;丰镇一带及华北平原沉降带则为相对安全地区.
In this paper, the area of intersection of Shanxi earthquake belt and Yanshan seismic belt is divided into 6 area units, and from the analysis of the moderate-strong earthquakes in this area and the law of small earthquakes in recent years, it is considered that the fourth active period in this area needs 15-20 Year to the end, there are still two times about 6 earthquakes of about 6. Since the 1980s, small earthquakes in this area have broken the normal law of the original quiet period, pay attention to the occurrence of sudden or isolated earthquakes in recent years.According to the comprehensive analysis As a result, the Yanhuai and Wei-Guang basins are regarded as the first type of danger zone. The areas of Huai’an and Tianzhen and the Datong and Daixian counties are the second type of danger zones. The Fengzhen area and the North China Plain sedimentation zone are relatively safe areas.