- Türkiye Uzaktan Algılama Dergisi
- Vol: 5 Issue: 1
- Measuring the Vulnerability of the Urban Fabric in the Face of Land Subsidence (Case Study: District...
Measuring the Vulnerability of the Urban Fabric in the Face of Land Subsidence (Case Study: District 17 of Tehran)
Authors : Ramin Rezaeishahabi, Alireza Arab, Amir Pishva, Vahid Hajipour, Marzieh Zahaki
Pages : 33-49
Doi:10.51489/tuzal.1300531
View : 38 | Download : 43
Publication Date : 2023-06-30
Article Type : Research Article
Abstract :The involvement of the 17th district of Tehran with the issue of land subsidence was the initial idea of the current research. The current research was conducted in the form of an analytical model in four steps. In the first step, after studying the research literature, the vulnerability indicators of the urban fabric were identified and organized into three criteria (physical and demographic, accessibility and proximity to high risk centers). In the second step, by using Delphi questionnaires and pairwise statistical comparisons, the priorities of vulnerability of the urban fabric in the face of land subsidence were determined. In the third step, the analytical model was defined based on the network analysis process (ANP). Also, the weight of each of the sub-criteria and criteria was obtained using Super Decision software. Finally, in the fourth step, these weights were applied to each of the layers related to the criteria in the ArcGIS software environment, and the final map of the vulnerability of the urban fabric was obtained as a raster in the geographic information system. The results of the model implementation showed that the urban fabric of the 17th district is prone to high vulnerability due to features such as high population and building density, the presence of worn-out fabric, buildings with low structural strength and very low construction quality. In total, about 657 hectares (80%) of the total built-up lands of Tehran\'s 17th district are under the influence of land subsidence.Keywords : Zemin Çökmesi, Kentsel bağlam, Ağ analizi (ANP), Tahran\'ın 17. bölgesi, hasar görebilirlik