【摘要】 通过对云南鲁甸5.6级地震中47个居民点的震害调查,给出了本次地震的等烈度分布图,分析了场地条件与震害的关系、各类房屋的震害特征、典型房屋震害累积效应以及生命线工程震害。结果表明:这次地震比2003年11月鲁甸5.1、5.0级两次地震破坏严重,形成了Ⅷ度破坏区及较大范围的Ⅶ度和Ⅵ度破坏区,盆地区的震害比基岩区的要重。其主要原因是:①盆地区广泛分布有软弱地层;②震区建筑结构简易,抗震能力极差;③三次地震震区基本重叠,震害累积效应表现突出。更多还原

【Abstract】 On Aug.10,2004,a M5.6 earthquake occurred in Ludian County,Yunnan.We made the earthquake disaster investigation in 47 residential areas of the seismic region,and gave the intensity distribution of the shock.Through analyzing the relation of site conditions and earthquake damages,characteristics of all kinds of building disasters,typical earthquake disaster accumulation effect of buildings,and lifeline engineering disaster,we found the earthquake caused more serious disaster than the previous two earthquakes with the magnitude 5.1 and 5.0 that occurred in November,2003,and formed extensive intensity Ⅷ,Ⅶ and Ⅵ affected areas,furthermore,the disaster in the basin region was heavier than that in the bedrock region.The main reasons are:(1) the widely distributing soft formations in the basin region,(2)very-weak aseismic ability of the buildings in the seismic area,and(3) the accumulation of three earthquake disasters.更多还原