摘要
为了及时准确评估安阳市洪水灾害风险,构建了安阳市洪水灾害风险评价指标体系及安阳市洪水灾害风险等级云模型。同时,利用熵权法和模糊变换法得到安阳市各县区的洪水灾害风险等级评价表,并绘制出安阳市洪水灾害风险评价地区分布图。以安阳市"7·19"特大暴雨进行验证,检验了指标选取的合理性及结果的准确性。研究结果表明:林州市和安阳县存在高风险洪水灾害等级,因为两地依靠太行山脉,受地形地势影响,降雨尤其集中,洪水灾害发生的可能性极高;且两地人口密度较高,洪水灾害容易造成较大的损失。
In order to timely and accurately assess the flood disaster risk in Anyang City,Henan Province,we established a flood disaster risk evaluation index system and flood disaster risk level cloud model.Also,the entropy weight method and the fuzzy transformation method were adopted to obtain the flood disaster risk assessment and the regional distribution map of the flood disaster risk assessment in Anyang City.Then,the extra-heavy rainstorm in Anyang City on July 19 was used to verify the rationality of evaluation index system and the accuracy of the results.The results showed that there were high risk level in Linzhou City and Anyang County,because Linzhou City and Anyang County are close to Taihang Mountains,where the precipitation concentrates due to terrain.Hence,the probability of occurrence of flood disaster was high in Linzhou City and Anyang County.Besides,the flood disasters may lead to greater losses to Linzhou City and Anyang County due to high population density.
作者
崔玉海
吴泽宁
吴丽
CUI Yuhai;WU Zening;WU Li(School of Water Conservancy Engineering,Zhengzhou University,Zhengzhou 450001,China;Henan University of Urban Construction,Pingdingshan 467000,China)
出处
《人民长江》
北大核心
2020年第7期7-12,共6页
Yangtze River
基金
国家自然科学基金重点项目(51739009)。
关键词
洪水灾害
风险评价
云模型
熵权法
隶属度
安阳市
flood disaster
risk assessment
cloud model
entropy weight method
membership degree
Anyang City
