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MODERN TUNNELLING TECHNOLOGY 2016, Vol. 53 Issue (3) :146-150    DOI:
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Analytical Investigation of Gas Burst Disasters during Tunnelling in Non-Coal Measure Strata
(1 Sichuan Transportation Investment Group Co. Ltd., Chengdu 610041; 2 Sichuan Wenchuan Maerkang Highway Limited Liability Company, Chengdu 610041)
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Abstract As one of the geological disasters in tunnel construction, gas bursts in non-coal measure strata are characterized by randomness and uneven distribution when compared to those that occur in coal strata, making these kinds of gas tunnels more dangerous. Based on the practical case of the Zhegushan tunnel, this paper describes the causes and bursting mechanism of the gas in non-coal strata tunnels in detail based on the analysis of geological conditions, gas level determinations and pressure testing, and gives a prediction criterion for the risk of gas bursts, which can play a guiding role for the research, design and construction of tunnels in non-coal measure strata.
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Keywords： Non-coal measure strata   Tunnel   Gas gushing   Gas bursting   Mechanism analysis   Risk prediction     
Abstract： As one of the geological disasters in tunnel construction, gas bursts in non-coal measure strata are characterized by randomness and uneven distribution when compared to those that occur in coal strata, making these kinds of gas tunnels more dangerous. Based on the practical case of the Zhegushan tunnel, this paper describes the causes and bursting mechanism of the gas in non-coal strata tunnels in detail based on the analysis of geological conditions, gas level determinations and pressure testing, and gives a prediction criterion for the risk of gas bursts, which can play a guiding role for the research, design and construction of tunnels in non-coal measure strata.
Keywords： Non-coal measure strata,   Tunnel,   Gas gushing,   Gas bursting,   Mechanism analysis,   Risk prediction     
Cite this article:   
.Analytical Investigation of Gas Burst Disasters during Tunnelling in Non-Coal Measure Strata[J]  MODERN TUNNELLING TECHNOLOGY, 2016,V53(3): 146-150
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