جستجوی مقالات مرتبط با کلیدواژه « ارزیابی ریسک » در نشریات گروه « مهندسی معدن »

The optimum operation of an open pit mine needs special attention to geotechnical problems including slopes stability. Such investigations should be performed continuously, and the obtained results be used in mine designing and also development studies. There are various types of factors affecting the instability problems of mine slopes and should be identified and investigated during risk assessment process. In this research, an attempt was made to identify the most important factors related to instability of slopes of Sungun copper mine, then rank factors based on their importance. For this purpose, Fuzzy Analytical Hierarchy process (FAHP) has been used. At first, using a questionnaire experts were interviewed and on this basis the most important risk factors defined in 3 layers, then the Hierarchal structure of problem was drawn. Then, FAHP was used to calculate the relative weight of factors affecting risk of slope instability and to determine their importance. The results obtained of field studies and also long term plans for slope controlling were compared with FAHP method results. On this basis, delay in mining operations (Layer 1), extended failure (more than a bench) (Layer 2), and discontinuities (Faults & Joints) (Layer 3) were defined as factors with high importance during risk assessment of slopes instability of Sungun copper mine.

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.