【摘要】 通过对以往震例的对比分析,发现2003年鲁甸震区震害明显偏重。在此基础上,综合分析了震害异常的主要影响因素,并且探讨了它们的致灾机理,认为该地震引起的明显震害异常,主要与地震发生在夜间、震区社会经济条件低下、场地存在软弱岩土和建筑物抗震性能差等因素有关。更多还原

【Abstract】 Through comparing the Ludian MS5.1,5.0 earthquakes in 2003 with the historical earthquakes,we found the disaster of the Ludian earthquake was particularly serious.Therefore,we study the causes of the anomalous disaster and the disaster mechanism,and consider that the heavy disaster is related with the fact that the earthquake occurred at night,the poor social and economic conditions,the weak foundation,and the bad aseismic ability of buildings in the seismic area.更多还原