Abstract:On October 25, 2003, two destructive earthquakes with Ms6.1 and Ms5.8 occurred one after the other on the boundary between Minle and Shandan counties in Gansu province, which caused 10 persons killed, 46 people injured and about fifty thousands persons lost their homes. The events also caused serious damage to village buildings, communal establishments of water conservancy, lifeline engineering, schools and hospitals. Immediately after the earthquakes, according to the national criterions and regulations, using the methods of spot check, single item check and fill table check, abundant practical data were gained. On this base of data, the disaster area is divided into three assessment sections, the break ratio, the loss ratio and fundamental data of every type building in each assessment section are established. Through statistic analysis on ten items and the professional calculation, a practical assessment of economic loss is figured out.
