地震灾害经济易损性评估研究——以甘肃省为例

Assessment of Economic Vulnerability Caused by Earthquake Hazard -Taking Gansu Province as An Example

摘要:

从灾害学基本理论出发结合模糊综合评价模型,建立了相应的地震灾害经济易损性的评估模型,构造了易损性因素指标集及评语集,并对甘肃省13个地级市进行地震经济易损性风险评估,最终获取经济易损性等级划分。结果表明:易损性最高的地区为兰州市、金昌市、天水市、武威市、张掖市;易损性最低的地区为平凉市、酒泉市、定西市和甘南州;其他地区介于两者之间。由于评估指标对评估目标的影响具有模糊性的特点,因此采用模糊综合评判法进行评估是合适的。

Abstract:

Based on the basic theory of disaster and the fuzzy comprehensive evaluation model, an assessment model of economic vulnerability caused by earthquake disaster is established, and the vulnerability factor indices set and remark set are constructed. Using the model 13 main cities in G-ansu province are taken as examples to do the assessments. The results show that Lanzhou, Jinchang, Tianshui, Wuwei, Zhangye have the highest economic vulnerabilities, and Pingliang, Jiuquan, Dingxi and Gannan have the lowest ones. As the influence of assessment indices on assessment target is fuzzy, the method is appropriate.