Environmental Risk Assessment of Shafarood Dam by using Multi-Attribute Decision Making Method

Subject Areas : Water Pollution

S. Rezaian ¹ , S.A. Jozi ² , N. Moradi majd ³

1 - Department of Environment, Science Faculty,Islamic Azad University, Shahrood Branch
2 - Department of Environment, Technical nd Engineering Faculty,Islamic Azad University, North Tehran Branch
3 - Department of Environment, Science and Research Branch, Islamic Azad University Khouzestan

Received: 2012-09-19 Accepted : 2017-02-18 Published : 2013-06-20

Keywords: Risk, Dam, construction phase, TOPSIS method, Shafarood dams Gilan,

Abstract :

Shafarood Dam is located at 27 km from the Hashtpar city of Guilan Province. In order to identify the environmental hazards caused by the construction of the dam measured and compared was with standards pollutions of surface water and groundwater and the air. To this, following identification of tasks and the environment of the study area with respect to the intensity, probability and possible consequences of those effects on the human, environment and equipment by using Topsis Fuzzy and AHP methods; identification and categorization of risks were performed under Delphi methods. To more, risk factors were categorized under natural, biophysical and human events. Scientific methods applied in this study are TOPSIS and AHP, which constitute MADM method. Then, to prioritize risk factors based on their importance, Analytic Hierarchy Process (AHP) method was used by way of entering values to Expert Choice Software. In the TOPSIS method; excavation and backfilling, drilling explosion works were given weights of 3.771, 2.981 and 2.851 respectively and were ranked from first to third. In AHP method; excavation and backfilling were given a final weight of 0.897 with the first priority, whereas the drilling and explosion were given final weights of 0.677 and 0.694 with the second and third priority.The more presented strategies to control and reduce identified risks. Keep moist levee and produce less dust during unloading times, Minimum soil translocation in season rainfall and prevent the movement of soil material at least on loan from the main river bed and corrective measures are introduced.