Research on the comprehensive management risk matrix of occupational hazards in coal mines
Objective This study aims to analyze the significance of combining occupational hazard risk assessment grading and the risk matrix method for the comprehensive management of occupational hazard prevention and control in coal mines.It seeks to provide more precise strategies for comprehensive management of occupational hazard prevention and control in coal mines.Methods From April to November 2021,the hazard analysis and critical control point method were used to determine the critical control points for occupational hazards in 13 coal mines under Shendong Coal Group.By comparing various occupational hazard risk assessment methods,a comprehensive evaluation model for occupational hazard risk was selected to evaluate the occupational hazard risk in coal mines.The research then combined the comprehensive assessment and classification of occupational hazards with the classification of occupational hazard protection measures to construct a comprehensive management risk matrix for occupational hazards suitable for coal mines.Results The calculation results of the comprehensive evaluation index for multi-factor occupational hazards in coal mines show that transportation operations are low-risk operations(0.2),coal mining operations are high-risk operations(3.7),and excavation operations are extremely high-risk operations(10.0).The comprehensive management risk assessment results of occupational hazards for the main operations in coal mines indicate that mining and excavation operations belong to the relatively serious risk level(B),while transportation operations belong to the minor risk level(D).Different levels of comprehensive management risk correspond to different occupational hazard prevention and control management measures.Conclusions The evaluation results of the comprehensive management risk of occupational hazards are basically consistent with the occupational hazard prevention and control management situation in coal mines.The comprehensive management matrix for occupational hazards is a better guide for the comprehensive management and hierarchical classification management of occupational hazards prevention and control in coal mines.
Occupational hazard risk assessmentRisk index methodComprehensive management risk matrix of oc-cupational hazard
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