Application of CWM-CM Model in Risk Assessment of Coal Spontaneous Combustion in Goaf
In order to analyze the state of spontaneous combustion risk of abandoned coal more scien-tifically,a combined weighting method-normal cloud model(CWM-CM model)is established to evaluate the risk of spontaneous combustion of abandoned coal in goaf.Firstly,8 typical influencing factors are se-lected to construct a risk assessment system for spontaneous combustion of coal in goaf.Secondly,the G1-cloud model,improved critical-cloud model and CWM-CM model are used to calculate the comprehensive weight of indicators,and the maximum membership degree is used as the criterion to evaluate the risk level comprehensively.Finally,the model is used to analyze the spontaneous combustion risk of coal in 3 goaf ar-eas of a coal mine in Shanxi Province,and compared with the evaluation results of mature-element exten-sion and unascertained measurement model.The results show that the spontaneous combustion risk of the abandoned coal in the three goaf areas is flammable,and the evaluation results of the three models are com-pletely consistent,which verifies the feasibility and applicability of the model in the spontaneous combus-tion risk assessment of the abandoned coal in the goaf area,and can provide a new idea for the spontaneous combustion risk assessment of the abandoned coal.
coal spontaneous combustionCWM-CM modelcloud model
万方数据
维普
