Comprehensive safety evaluation for back-filling control system based on modified set pair matter-element extension model

To further enriching the safety system evaluation theory and comprehensively evaluate an control system for back-filling. This paper constructed a set pair matter-element extension comprehensive evaluation model based on the whole process theory, a multi-level comprehensive safety evaluation index system for back-filling control system. The index system was constructed by selecting 16 influencing factors from four aspects: slurry preparation system, pipeline monitoring system, strength monitoring system, and system visual management. Weights of the indicators are calculated by order relationship method, entropy weight method, and Lagrange combination weighting method. According to the set pair matter element extension calculation principle, a single indicator connection membership function is constructed. By calculating the single indicator connection membership degree and the comprehensive connection membership degree, the level of the control system for back-filling is comprehensively analyzed using the maximum membership degree as the criterion; Finally, taking three mines as examples, the blind number theory was introduced to determine the indicator assignment, and a comprehensive safety evaluation of the system level was conducted. The evaluation results were compared with cloud model and attribute recognition model. The results show that the evaluation results of the three models are consistent and consistent with the actual situation, indicating that the comprehensive evaluation model based on combination weighting method and set-pair extension matter element is applicable in the evaluation of control system for back-filling.