Statistics and influencing factors analysis of tunnel gas accidents in China

doi:10.16265/j.cnki.issn1003-3033.2021.04.005

Abstract

Abstract: In order to explore distribution law, development trend and influencing factors of tunnel gas accidents in China, all data of gas tunnels and related accidents in China from 1949 to 2019 were gathered. Then, chart analysis method was used to summarize the accidents, and distribution and development trend characteristics of accident type, accident consequence, occurrence area and timing were summed up. Finally, influencing factors of 8 typical tunnels which witnessed accidents at various levels were analyzed by grey correlation method. The results show that tunnel gas accidents majorly distribute in southeastern China while other regions have less. And the main accident type is gas explosion which leads to the severest consequences. It is also found that key influence indexes of tunnel gas accidents include gas content in surrounding rock, stratum lithology, geological structure, groundwater exposure degree and buried depth of tunnels in turn.

Key words: tunnel, gas accident, accidental statistics, grey correlation method, influencing factors

CLC Number:

X928

WANG Haiyang, ZHAO Shulei, CHEN Xiang, WANG Jie, ZHOU Yanmin. Statistics and influencing factors analysis of tunnel gas accidents in China[J]. China Safety Science Journal, 2021, 31(4): 34-40.

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