Abstract
This paper presents an overview of mining seismicity, gas outburst and their origin. The internal relation of mining seismicity and gas outburst in the dynamic process is studied on the basis of the fact that these disasters sometimes occur simultaneously. The examples show a close relationship between mining seismicity and gas outburst in high gassy coal mines. It is proposed that strong mine shocks plus the response of low value and delay time are early warning signals. The mechanism of the relationship between mining seismicity and gas outburst is analyzed by using the location of mining shocks, focus mechanism, cause of mining shocks and conditions of gas outburst. The trigger action of gas fluid on mining shocks, especially the effect of the anomalous property of supercritical fluid on the preparation and occurrence of mining shocks is discussed. According to the similarity between mining-induced earthquakes and tectonic earthquakes in terms of mechanism, the significance of the above results in the study of physics of earthquake source is also discussed.
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Foundation item: Social Public Welfare Foundation of Ministry of Science and Technology (2001DIB20107) and National Natural Science Foundation of China (40474018).
Contribution No.07FE3008, Institute of Geophysics, China Earthquake Administration.
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He, Xs., Li, Sy., Pan, K. et al. Mining seismicity, gas outburst and the significance of their relationship in the study of physics of earthquake source. Acta Seimol. Sin. 20, 332–347 (2007). https://doi.org/10.1007/s11589-007-0332-4
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DOI: https://doi.org/10.1007/s11589-007-0332-4