Comparison of outburst danger criteria of coal seams for acoustic spectral and instrumental forecast methods

International Scientific and Research Conference on Knowledge-based Technologies in Development and Utilization of Mineral Resources

地球科学;矿业工程

Shadrin, A.V.^1 ; Bireva, Yu A.^1

Federal Research Centre of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, 10 Leningradsky Ave, Kemerovo

650065, Russia^1

关键词: Coal strength;    Forecast method;    High frequency HF;    Instrumental methods;    Low frequency components of noise;    Methane concentrations;    Operating equipments;    Outgassing rate;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/45/1/012008/pdf
DOI  :  10.1088/1755-1315/45/1/012008

来源: IOP

【 摘 要 】

Outburst danger criteria for the two methods of current coal seam outburst forecast are considered: instrumental - by the initial outgassing rate and chippings outlet during test boreholes drilling, and geo-physical - by relation of high frequency and low frequency components of noise caused by cutting tool of operating equipment probing the face area taking into consideration the outburst criteria correction based on methane concentration at the face area and the coal strength. The conclusion is made on "adjustment" possibility of acoustic spectral forecast method criterion amended by control of methane concentration at the coal face and the coal strength taken from the instrumental method forecast results.