عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Sinkholes are holes in limestone ground or other soluble rocks. These holes are formed in almost cylindrical or cone shapes, and their average size is around three meters. Various natural and human factors have played an important role in the formation of this phenomenon Occuring gradually, sinkholes may not have the same costly and destructive effects and consequences as floods or earthguakes. The city of Abarkuh, located in the South West of Yazd province, includes areas that are faced with the problem of sinkholes. In recent years, the occurrence of sinkholes in the two villages of Faizabad and Horok around this city has caused significant damages to farming land as well as equipment. This study aims to find out about the areas prone to sinkhole occurance in the future and provide suggestions as to lessen damages. To evaluate the factors influencing the occurrence of sinkholes and to predict the risk of this occurrence in these areas, GIS and fuzzy logic were used respectively. For modeling, nine criteria were chosen as the main influetial ones. Then, each layer got fuzzy using fuzzy membership functions available in geographic information system (Gis10). The results of this model generally regard about 32 percent of an area of about 17 sq km that faces a high risk of sinkholes. The area is mainly located in the center of the county. Also, 13 percent of this area, 7 square kilometers, is less potential for sinkholes.