Comprehensive evaluation of mine cable fire hazards based on entropy weight-grey correlation method

• Published in: Journal of thermal analysis and calorimetry 2023-06, Vol.148 (11), p.4843-4851
• Main Authors: Wang, Weifeng, Huo, Yuhang, Kang, Furu, Ren, Hao, Wang, Zhenxing, Yang, Bo
• Format: Article
• Language: English
• Subjects: Analytical Chemistry; Cables; Chemistry; Chemistry and Materials Science; Combustion; Cone calorimeters; Correlation; Correlation analysis; Entropy; Evaluation; Fire hazards; Hazard assessment; Heat release rate; Inorganic Chemistry; Mass distribution; Measurement Science and Instrumentation; Methods; Mine accidents; Multilayers; Parameters; Physical Chemistry; Polymer Sciences; Radiant flux density; Radiation; Radiation effects; Thermal radiation; Weight
• ISSN: 1388-6150; 1588-2926
• DOI: 10.1007/s10973-022-11834-2

External heat source is an important disaster-causing factor of mine cable fire. To address the subjective mass distribution and single-index problems in the current evaluation of cable fire hazards, this study proposes a comprehensive evaluation method for the fire hazards of mine cables that is based on entropy weight-grey correlation method. Initially, a cone calorimeter was used to experimentally research the combustion of mine cables. The fire combustion characterization parameters, including ignition time, heat release rate, smoke production rate and CO production rate, were measured, and the effects of radiation intensity on the mine cable fire hazards were analysed. Next, utilizing the measured data from combustion experiments, the key influencing factors of mine cable fire hazards were analysed, and a multi-layer evaluation index system was developed for such fire hazards. Finally, the proposed method was applied for comprehensively assessing the fire hazards of mine cables under different thermal radiation conditions. The results show that the mine cable fire hazards cannot be effectively evaluated by relying on a single combustion parameter, which can be excellently quantified by applying the entropy weight-grey correlation method. Under radiation intensities of 30, 35, 40, 45, 50, 55 and 60 kW m −2 , the degrees of weight-grey correlation for the mine cable fire hazards are 5.45, 5.46, 5.54, 6.79, 6.48, 8.77 and 11.10, respectively. With the increase in radiation intensity, the cable fire hazard shows an increasing trend. Capable of better evaluating the fire hazards of mine cables, the proposed method provides a basis for the prevention and control of mine cable fire risks.