Abstract: The occupational hazard of mine dust has become the most important occupational health problem in the mining industry. Risk assessment and quantification of mine dust hazards are the focus of mine occupational health work. In order to deeply understand the study context of mine dust occupational hazard risk assessment,based on the perspective of bibliometrics, VOSviewer and CiteSpace software were used to visualize the literature on mine dust hazard risk assessment collected by CNKI and WOS (Web of Science ). High-frequency keywords were extracted,and keyword co-occurrence and cluster analysis were carried out to obtain the time series characteristics,study subjects and hot frontiers information of the literature. According to the results of visual analysis,the risk assessment indicators,hazard level and assessment methods are analyzed and elaborated in detail. The risk assessment process is refined,the physical and chemical characteristics and hazard factors of mine dust were analyzed,and then the risk assessment indicators were summarized. The classification of dust occupational hazards was summarized. According to the three categories of qualitative,quantitative and comprehensive assessment,the risk assessment methods of mine dust occupational hazards are sorted out,and the quantitative model of health injury risk assessment is explained. The study results show that:at present,a lot of in-depth study and practice have been carried out in the field of mine dust occupational hazard risk assessment at home and abroad,and the assessment work has achieved remarkable results. However, the dust in various production links of mines is still difficult to completely curb,the theoretical mechanism of related study is not yet mature,the influencing factors of evaluation indicators are complicated,the classification of hazard degree lacks basis, and the evaluation methods have subjective uncertainty. The risk assessment system of dust occupational hazards in mines needs to be systematically studied,and the risk analysis and early warning platform of dust hazards still needs to be explored and constructed. In the future,it is necessary to further improve the relevant laws and regulations on the risk assessment of occupational hazards of mine dust; Select risk assessment indicators scientifically and reasonably, simplify the assessment process,and achieve good practical benefits;Break through the limitations of existing methods,a suitable data information theory risk assessment model is established to provide an effective basis for mine dust control;Actively apply new technologies such as cloud computing and big data to realize the construction of dust monitoring-risk assessment-intelligent prevention and control integrated system.

Key words: mine dust,occupational hazard,risk assessment,knowledge graph,visual analysis