Engineering Geology Studies of Freeway Route Using Analytic Hierarchy Process and GIS (Case Study: Qazvin - Rasht Freeway District Roudbar)

Kamani, M; Uromeihy, A; Joorabchi, M

doi:10.22071/gsj.2015.42149

Engineering Geology Studies of Freeway Route Using Analytic Hierarchy Process and GIS (Case Study: Qazvin - Rasht Freeway District Roudbar)

Document Type : Original Research Paper

Authors

M Kamani ¹

A Uromeihy ²

M Joorabchi ³

¹ M.Sc. Student, Department of Engineering Geology, Faculty of Basic Science, Tarbiat Modares University, Tehran, Iran

² Professor, Department of Engineering Geology, Faculty of Basic Science, Tarbiat Modares University, Tehran, Iran

³ M.Sc., Director of Technical Review and Approval of Plans, the Ministry of Roads and Urban Development, Tehran, Iran

10.22071/gsj.2015.42149

Abstract

Roads are of linear engineering projects passing various rock units and geological conditions, so it is necessary to engage the engineering geological studies along the way. The studies continue until the end of the construction and operation. In the route selection process, large volumes of data and different track conditions are facing. To perform this manually is time consuming and not accurate enough. This study examines the status of engineering geology freeway route Qazvin - Rasht in Roudbar discussed in this context, the factors affecting engineering geology route selection and construction of the freeway, using the Analytical Hierarchy Process (AHP) and Expert Choice software to give weight of these factors, according to their suitability for the construction of freeways, and then layers weighted overlay in GIS software and the final map has been prepared. The final map shows the quality of route engineering geological conditions, which is provided for both surface and subsurface (tunnels) with the least error. Since the procedure for engineering geological survey route is a new method, it requires further investigation and to test in other places in order to be much more modified and corrected. On the other hand, this model can be used for other engineering geological investigations due to high flexibility of this model.

Keywords

Engineering geology

Qazvin - Rasht Freeway

AHP

GIS