彝良5.7、5.6级地震烈度分布及烈度异常区震害特征初步分析

摘要

根据彝良5.7、5.6级地震现场震害调查资料,介绍了地震烈度分布及各烈度区的震害特征；描述了两个烈度异常区17个点、4250户调查点的详细震害情况,对异常区震害特点进行了分析,并从地质构造、含煤地层、地形地貌及岩土性质、房屋建筑结构及质量等方面对震害异常原因进行了初步分析与探讨,提出了异常区恢复重建需考虑的不利因素.%According to the seismic damage survey data of Yiliang M5.7 、5.6 earthquakes,we introduced the intensity distributions and seismic damage characteristics of the earthquakes,and described the detailed earthquake damage situations of 17 disaster investigaton points and 4250 households in two intensity abnormal areas.Then we analyzed seismic damage characteristics in intensity abnormal area,and preliminarily analyzed and discussed the reason of seismic damage abnormality in terms of geologic structure,coal-bearing strata,topography and geomorphology and rock property,building structure and quality etc..Finally,the unfavorable factor of restoration and reconstruction in intensity abnormal were proposed.