Science Target Conference Systems, Ajman 4th International Environment Conference 2016

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Application of multi-criteria decision making in process of environmental impact assessment in tailing dam
Ahmad Khodadadi Darban

Last modified: 2015-12-23

Abstract


The important elements to improve the safety and stability of tailings disposal facilities are geotechnical investigation, engineered design, construction, operation and monitoring of the tailings storage facility. Quality engineering is essential in the construction of a fill dam because the materials used have lower strength properties than the concrete dams thus the performance and safety of tailing dam is very important. In this research, application of Multi Criteria Decision Making (MCDM) methods has been investigated in the Environmental Impact Assessment (EIA) process. For this purpose, Zarshoran tailing dam in the north west of Iran has been selected as a case study. The ability of MCDM methods in EIA has been tested in two parts. In the first part, best site for dumping tailing in case study area has been identified by using TOPSIS method. The weights and criteria are specified to rank the sites and one of the sites has been chosen as the best place in the study area. In the second part, the significant of environmental impact has been investigated by using MCDM methods. SAW, TOPSIS and ELECTRE-TRI are three multi criteria techniques which are used to sort the alternatives in the case study. Results of these three methods have been compared and sensitivity analyses have been done for three MCDM methods. Results show that the ELECTRE-TRIis a powerful method in EIA process for identifying significant of environmental impact and sorting the alternatives.