关键词: 地下金属矿山, 安全评价, 层次分析法（AHP）, 模糊综合评判

Abstract:

In order to conduct a comprehensive safety evaluation of underground metal mine，a variety of risk factors affecting mine safety as well as their interrelations are analyzed and a hierarchical structure model including seven evaluation units and thirty-two risk indexes are built.Elements located at the same level are compared with each other to construct a judgment matrix by the means of analytic hierarchy process （AHP），and the weight coefficient of each risk factor can be further obtained through calculation.Expert scoring method is adopted to determine the membership degree matrix of qualitative indexes and fuzzy evaluation is then applied to determine the grade of mine safety condition with the premise that the safety condition has been divided into five grades.Apply this safety evaluation method to an underground gold mine of Shandong Province.The result shows that the mine is relatively safe while the weight ratios of safety management，unsafe behaviors of employee，safety education and training are 40.4%，25.3% and 12.5% respectively.The three factors have a significant role in mine safety and should attract more attention.Some effective measures should be taken to improve the safety level of the mine，because of the evaluation results of the hydrogeology，dust and noise conditions is“general safety”.Practice proves that the result obtained from this evaluation system is consistent with mine safety reality and the main risk factors affecting mine safety can be highlighted，which has a guiding significance for mine safety evaluation and developing a best management solution.

Key words: underground metal mine, safety evaluation, analytic hierarchy process（AHP）, fuzzy comprehensive evaluation method