Risk assessment of coal mine rockburst based on the combination weighting-cloud model

As a typical dynamic disaster in coal mine production site, rockburst poses a great threat to the safety of coal mine production.This paper proposes a new weight fusion scheme, which combines analytic hierarchy process with RITIC weighting method, realizes the combination of subjective weighting and objective weighting, reduces the deviation between the weighting value after fusion and the actual weighting value of evaluation index.According to the investigation of the actual situation of the coal mine site and the related literature, the risk assessment model of coal mine rockburst is established, which includes four first-class index such as physical and mechanical factors of coal rock and geological factors, and 23 second-class index such as uniaxial compressive strength and gravity stress.Through the field practice of a coal mine in Yankuang Group, the evaluation results of the model are consistent with the results of the practice of prevention and control of rockburst in the field of coal mine, and the fusion weight cloud model coal mine rockburst risk evaluation model has the advantages of adaptability.