Zoning Evaluation of Liquefaction Potential Using VIKOR Model (Case Study: South West of Tehran)

Soil liquefaction as a natural risk of land instability and other problems. Liquefaction hazard zonation, the process of dividing an area into homogeneous regions based on their degree of liquefaction refers to the risk of instability. The aim of this study was has been to evaluate the liquefaction zoning in the South West of Tehran, using one of the MCDM Model (Multiple Criteria Decision-Making ). For this purpose has been used criteria of groundwater, depth of Clay, made the earth and the distance of the fault. Modeling the probability of liquefaction was prepared in the structure and raster GIS environment and the potential for liquefaction final map. The results show that 28 percent of the study area, especially in the southern part of the liquefaction risk is highest and the lowest risk of liquefaction can be seen in the northern part.