Mineral resources are an important pillar of China’s development.Industries based on mineral resources occupy half of the national economic development.However，with the long-term exploitation of mineral resources in China，many mines have encountered various production and safety issues.Poor resource conditions，aging production equipment，poor management capabilities，and many safety accidents have brought problems to the development of China’s mines and have become a huge hidden danger.In recent years，with the rising demand for healthy and safe mine environment in China’s mines，the relationship between safety guarantee conditions and the production capacity of mines has become closer and closer.The optimization of mine safety guarantee conditions and the scientific and rational formulation of production capacity targets becomes particularly important.Based on the characteristics of the production capacity of underground metal mines，this paper establishes the “human，machine，material，environmental，and pipe” safety guarantee research and evaluation model of underground metal mines related to production capacity through the methods of literature survey，field investigation，and expert interviews.The calculation characteristics of the model calculation process were designed and demonstrated by comprehensively utilizing the calculation characteristics of entropy weight-analytic hierarchy process，accident tree and LEC method.Finally，taking an underground lead-zinc mine in China as an example，the research was conducted from three aspects，including the research on calculation and evaluation of the current safety assurance status score under the existing production capacity，evaluation and result verification of the ability to complete different production targets under current security conditions，and production capacity target formulation in the next 3 years.The evaluation results show that under the existing production conditions，if the mine want to rapidly improve the safety guarantee conditions，it is necessary to prioritize the reduction of the number of underground operators，reduce the violation rate of the operators，reduce the length of underground operations，optimize the conditions of underground mining，and rationally optimize the mining structure，and so on；The mine’s optimal production targets from 2020 to 2022 should be located at about 138 000 t/a，137 000 t/a，and 133 000 t/a，respectively.The comparison between the evaluation results and the facts proves that the evaluation results are consistent with the actual situation of the mine and can provide reference and guidance significance for the actual production of the mine.Therefore，the evaluation method can provide an effective basis and direction for mine capacity optimization，self-evaluation and improvement of safety guarantee capabilities.

http://www.goldsci.ac.cn/article/2020/1005-2518/1005-2518-2020-28-5-753.shtml