In the Laboratory of Engineering Geophysics, modern geophysical instruments are used for non-invasive ground investigation. Among the most commonly used devices are:

  • SCINTREX Autograv CG-5 (Canada) - gravimetric method
  • Geophysical Survey Systems Inc. SIR-2 and SIR-3000 with set of transceiver antennas with frequencies: 80, 100, 120, 200, 270, 400, 1000MHz (USA) - electromagnetic method
  • Geonics EM34-3XL (Canada) - electromagnetic method
  • ABEM LUND IMAGING SYSTEM (Sweden) - electrical-resistivity method
  • Instantel BLASTMATE II DS-677 (USA) - seismic method (1 triaxial geophone)

  • Determination of methane content using direct method
  • Tests using United States Bureau of Mines (USBM) method.
    They include determination of:
    • Lost gas,
    • Desorbing gas,
    • Residual gas,
    • Methane content.
  • Determination of physicochemical properties:
    • Ash content (A),
    • Transient moisture (Wex),
    • Hygroscopic moisture (Wh),
    • Moisture in the analytical sample (Wa),
    • Volatile matter (Vdaf),
    • Density (dr).
  • Chromatographic analysis of following gases: O2, N2, H2, CO2, CO, CH4, C2H6, C2H4.
  • Determination of sorption parameters:
    • Effective diffusion coefficient (De),
    • Sorption capacity (a),
    • Sorption capacity in reference to pure coal substance (adaf),
    • Sorption half-time (t0,5),
    • Density (dr),
    • Ash content (A)
  • Tests of methane desorption and emission from samples of hard coal.

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