Citation

Cheng L, Guo A, Guo H, Cao D. China Saf. Sci. J. 2022; 32(4): 59-64.

Copyright

(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2022.04.009

PMID

unavailable

Abstract

In order to reveal evolution process of gas explosion risks in coal mines during accident development, firstly, risk factors were extracted through 5W analysis method by analyzing 289 gas explosion accident investigation reports, and then, they were classified based on interpretation structure model. Secondly, concept of risk coupling strength was defined by adopting Pearson algorithm, and risk coupling was analyzed by SPSS21. 0. Finally, risk evolution paths were constructed according to temporal relationship and logical sequence among risk factors.The results show that the coupling intensity of spark generation and illegal firing is the largest for all the past gas explosion accidents. There are 9 strong coupling risk evolution paths, of which 3 are the shortest ones. The three key measures to prevent accidents are to control gas probe shortage, gas leakage detection and blasting flame. © 2020 China Safety Science Journal. All rights reserved.

Language: zh