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Assessing Environmental Risk Caused by Zanjan’ s Paverood Dam in its Construction Stage Using a combination of TOPSIS and RAM-D Methods




 The aim of conducting this study is to investigate and assess the risks Paverood Dam causes in its constructions stage. After collecting and studying the information related to the environmental conditions of the under-study area and the technical conditions of the Dam construction, a list of the possible risk factors were prepared as a questionnaire and it was presented to a group of professionals including elites and the professors teaching majors relevant to environment and Dam civil engineering to be evaluated. The number of the questionnaires was determined on the basis of Cochran’ s formula. First the experts group participating in the study was asked to score the questionnaire in order to analyze the obtained questionnaires and the risks present in the area in the fRAMework of the Likert scale. After analyzing the given scores through using the findings of PHA method, TOPSIS method was used to prioritize the identified risks of Paverood. After prioritizing the risk factors, the RAM-D method was used to assess the risks and the effect on Sorkh Abad conservatory with score 9, erosion with a score of 6and working in heights and earthquake taking with a score of 3 were identified as the most crucial risks of Paverood Dam. Environmental management plans are essential in order to decrease the effects of the Dam’ s risks it its construction phase therefore the risk decreasing options are suggested at the end for the purposes of dealing with the identified risks.


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