应用灰色系统理论进行地震灾害等级划分和灾情分析比较

ANALYSIS AND COMPARISON OF SEISMIC DISASTER SITUATIONS AND DAMAGE GRADE DIVISION BY USING GREY SYSTEM THEORY

通过对地震时人员死亡、受伤、房屋破坏和直接经济损失４个灾害损失指标的函数转换，使得用不同的损失指标判别灾害等级的标准取得了统一．然后，应用灰色聚类方法划分地震灾害等级，并用灰色关联度排序方法对不同的灾情进行分析比较．同时还对１９６６～１９８３年我国大陆７次重要地震和１９９５年我国大陆１７次地震进行了灾害等级划分和不同灾情的分析比较．结果表明。

In this paper,through the function transformation of four disaster loss indexes about the dead number,the injured number,destroyed buidings and direct economic loss caused by earthquakes,the standards to distinguish these disaster grades by using different loss indexes are unified.The earthquake disaster grades are divided by the grey cluster method,and the different earthquake disaster situations are compared by the sequencing method of the grey associative degree.The disaster grades of 7 important earthquakes in Chinese mainland from 1966 to 1983 and 17 earthquakes in Chinese mainland in 1995 are divided and their disaster conditions are compared by using the methods.The results show that the methods basically can evaluate quantitatively and accurately the seismic damage situation.