Inštitut za rudarstvo, geotehnologijo in okolje, Ljubljana (IRGOLJ)
  • Roadway face advancement in areas with coal and gas outburst hazards
    Zavšek, Simon ...
    The solving of complex problems related to sudden outburst of coal and gas into excavated areas of the Velenje Lignite Mine (Slovenia) is based on the identification and evaluation of individual ... influential parameters. These are: stress state within the coal scam, the state of adsorbed gases and the mining/technological conditions of roadway advancement. The division of a broader exploitation area into sections with different hazard levels of sudden coal and gas outburst serves as a basis for the systematic study of roadway advancement. The mining and geotechnical conditions influencing the work process in existing mine roadways are determinated with the help of an expert system on the following basis: * The estimation of lignite structure on the roadway face , the primary state of deformation at fracture and an evaluation of the probability of gas outburst. * The determination of physical and mechanical properties of coal based on drilling parameters and an investigation of elasticity parameters. * The use of a numerical model (FEM, FDM) for the simulation of roadway face advancement in areas with different lignite structures, bearing in mind previously determined strength levels of such areas. A system conceived in this way enables reliable adaptation of individual technological phases in the finishing of mine communications to changing conditions. This allowed us to considerably reduce the number of hazardous occurences and introduce effective supporting measures in order to ensure the necessary stability of communications during the expected exploitation time.
    Vir: International symposium - cum - workshop on Management and control of high gas emissions and outbursts in underground coal mines : 20-24 March, 1995 Wollongong, NSW, Australia (Str. 211-215)
    Vrsta gradiva - prispevek na konferenci ; neleposlovje za odrasle
    Leto - 1995
    Jezik - angleški
    COBISS.SI-ID - 7643

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