SELECTING REVETMENT FOR RURAL RIVER USING AHP AND ANP MODELSIN TAIWAN– FROM VIEW OF CONSTRUABILITY

Abstract

Revetments are usually required to provide protections against erosion, to remain or improve hydraulic performance and to create recreation spaces along riverbanks. With an objective of developing a model for selecting the proper type of revetments, from views of construability, this study investigated three alternatives that are commonly used in Taiwan. By using of Analytical Hierarchy Process (AHP) model and Analytic Network Process (ANP) model, the final weights of alternatives are established. The results reveal that the final weights of the alternatives are 0.3714 (precast concrete block), 0.329 (rock riprap) and 0.2837 (gabion) when AHP model was applied, and 0.3676 (rock riprap), 0.3583 (precast concrete block) and 0.2741 (gabion) when ANP model was applied. This study illustrates an evaluation model for determining the priority of a rural river revetment construction.