Assessment of coal mine gas explosion risk based on grey-matter element model

doi:10.16265/j.cnki.issn 1003-3033.2021.02.014

Abstract

Abstract: In order to identify influence path among risk factors and come up with a scientific and feasible risk assessment method of gas explosion disaster, firstly, previous typical gas explosion cases were analyzed based on theory of three types of risk sources, and 14 influencing factors were identified and extracted. Secondly, a grey matter-element evaluation model was constructed through integrating grey system theory and matter-element extension model. Finally, with actual investigation data from coal mines in Shanxi province of China as an example, weight and correlation function of each influencing factor were calculated, logical relationship of risk factors was combed, and risk level of gas explosion in two specific working faces of investigated mine was obtained. The results show that average gas emission content, coal dust explosion index, mining mechanization level in No.1 working face and the gas concentration in that of No.2 are all at less safe level, and comprehensive risk level of them are at general safety level and safety level, respectively.

Key words: grey correlation method, matter-element extension model, gas explosion, risk assessment, three types of risk sources

CLC Number:

X932

LU Jintao, REN Licheng, RONG Dan, GUO Xinyao. Assessment of coal mine gas explosion risk based on grey-matter element model[J]. China Safety Science Journal, 2021, 31(2): 99-105.

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