جستجوی مقالات مرتبط با کلیدواژه « شباهت به گزینه ایده آل » در نشریات گروه « مهندسی معدن »

Due to the increasing number of accidents while working in the mines, studies related to maintaining the safety and health and improving safety management are expanding today. To reduce accidents and injuries, risk assessment should be performed continuously in the mines. For this purpose, two gold mines of Ardestan Dareh Ashki and Isfahan Moteh were examined. In the first stage of risk assessment, information on hazards in the mines was collected and in the second stage, the probability of occurrence and severity of its effect were evaluated. The two gold mines were then developed using methods similar to the ideal option and fuzzy logic to assess the risks The total hazards of the ore mining and concentrating operations in these mines were 136, which were classified into 8 groups. Finally, after completing the necessary calculations, several groups with different risks were obtained. The first group with the highest risk included unpredictable explosions, non-standard explosives, tailings dam failure, cyanide leakage, people falling into the tailings dam, electrocution while working with equipment, slipping or slipping, not wearing safety clothing, unauthorized entry It was in the area of ​​extraction and explosion during firefighting. Based on the obtained results, it is possible to plan and take appropriate action to prevent the occurrence of undesirable results.

Prioritising mines for investment is one of the major issues in mining economic. In this kind of problem, mines are ranked according to the conditions and characteristics of mines like value of mine reserve, production capacity of mines etc.. Based on this ranking, investment priority for each mines determined. In this study, priority investment for oxidized copper mines in Semnan province has been found using the TOPSIS method, a multi-criteria decision-making methods. TOPSIS method is based on the concept that the chosen alternative should have the shortest geometric distance from the positive ideal solution and the longest geometric distance from the negative ideal solution. In this study, 12 different criteria, and 33 copper mines in Semnan province were considered for prioritization. The decision criteria were weighed by surveying of experts in the field and then the importance of each factor have been determined using AHP method. Finally, using TOPSIS method, Chah Mosa, Kolut and Chah Farakh copper mines are ranked as first, second and third priority for investment, respectively. Also, sensitivity analysis is done to find the weight of criteria which are the most effective in prioritizing mines.