Study on chain relationship and risk assessment model of coal mine geological disasters

Geological disasters are mostly located in the mined area of the mine, which mainly shows the characteristics of suddenness, mass occurrence, induction, regional, diversity, and great harm. Mine geological disasters often bring heavy casualties and property losses, and their social impact is huge. This paper studied the characteristics and inducing factors of typical geological disasters in mines, pertinently studied the inducing internal and external factors of geological disasters, analyzed the chain relationship and main characteristics of mine geological disasters, and studied the close relationship between the breeding, inducing, and formation of different geological disasters and environmental geology in mining areas. These disasters will have cumulative effects over time; the interaction between disasters is likely to form a chain reaction and have a serious impact on the mining area and surrounding areas. Using the analytic hierarchy process, a risk assessment system of mine geological disasters with 10 indexes is constructed from three aspects: geological conditions, natural conditions, and human activities. The analytic hierarchy process (AHP) structure model was established, and the comprehensive evaluation model of mine geological disaster risk was established through the research of AHP research. A comprehensive analysis of mine geological disaster risk in the recent 10 years was conducted to study the changing trend of different evaluation indicators. The key indicators affecting geological disasters were obtained, which provided theoretical support for mine geological disaster prediction.