Contact

DEPARTMENT OF GAS HAZARD CONTROL

Podleska Str. 72, 43-190 Mikołów, Poland

 

Head of Department
Krystian Wierzbiński Ph.D.Eng
e-mail: kwierzbinski@gig.eu
telephone: +48-32 3246 510

 

 

 

LABORATORY OF GAS ANALYSES

Head
Marcin Karbownik M.Sc.Eng
e-mail: mkarbownik@gig.eu
telephone: +48-32 3246 503

 

 

 

LABORATORY OF EXPERTISE AND UNDERGROUND RESEARCH

Head
Henryk Koptoń Ph.D.Eng
e-mail: hkopton@gig.eu
telephone: +48-32 3246 508

 

 

 

LABORATORY OF GAS AND ROCK OUTBURST HAZARD COMBATING

Head
Krystian Wierzbiński Ph.D.Eng
e-mail: kwierzbinski@gig.eu
telephone: +48-32 3246 510

 

 

Scope of Gas Hazard Control Department activities:

  • Gas content research, including determination of methane content in coal seams;
  • Forecasting the emission of methane to operation, preparatory and development workings;
  • Opinions on the classification of coal seams or their parts and the methane areas to the appropriate methane as well as gas and rocks outburst hazard categories;
  • Classification of mining workings (rooms) to the appropriate degree of danger of methane explosion;
  • Assessment of methane hazard development for operated longwalls taking into account the methane-ventilation conditions and the applied prevention including methane drainage;
  • Development of technologies for methane recovery from coal deposits and its utilisation;
  • Research on the hazard of methane and rock outbursts in the coal seams or their parts in terms of the classification and the determination of the limits of the classification to the appropriate outburst hazard category as well as overcoming this hazard;
  • Expertise on the methods of methane drainage in the operation areas;
  • Designing of separate ventilation systems for the roadways developed in methane coal seams;
  • Comprehensive methane and endogenous fires hazards assessment in the designed operation areas;
  • Numerical calculations together with ventilation network analysis of designed areas of operation in the conditions of methane and endogenous fires hazard occurrence;
  • Numerical calculations and design of the operation for the areas below the opening level;
  • Research and assessment of the gas hazard for the subsequent stages of excluding the workings, areas, levels and shafts from the mining operation of a liquidated mine;
  • Variant analysis of the simplification of the ventilation network model of the liquidated methane mine;
  • Development of insulation technologies of the excavations in liquidated gassy mine;
  • Developing of accumulated balance of free methane in the workings of liquidated coal mine in a conventionally accepted period of time in conjunction with hydrogeology, tectonics and the conditions related to the adjacent mines;
  • Forecast of the possibility of gas hazard occurrence on the surface of liquidated gassy coal mine within mining area
  • Research on the kinetics and intensity of the mining gases inflow to the subsurface zone in the mining area of liquidated coal mine;
  • Developing methods of active countermeasures for gas hazard in the subsurface zones in post-mining areas of liquidated coal mines.
  • 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.

Laboratory of Expertise and Underground Research in Experimental Mine “Barbara” operating within Central Mining Institute is performing comprehensive services in the scope of following domains:

  • Gas content research, including determination of methane content in coal seams;
  • Forecasting the emission of methane to operation, preparatory and development workings;
  • Opinions on the classification of coal seams or their parts and the methane areas to the appropriate methane as well as gas and rocks outburst hazard categories;
  • Classification of mining workings (rooms) to the appropriate degree of danger of methane explosion;
  • Assessment of methane hazard development for operated longwalls taking into account the methane-ventilation conditions and the applied prevention including methane drainage;
  • Development of technologies for methane recovery from coal deposits and its utilisation;
  • Research on the hazard of methane and rock outbursts in the coal seams or their parts in terms of the classification and the determination of the limits of the classification to the appropriate outburst hazard category as well as overcoming this hazard;
  • Expertise on the methods of methane drainage in the operation areas;
  • Designing of separate ventilation systems for the roadways developed in methane coal seams;
  • Comprehensive methane and endogenous fires hazards assessment in the designed operation areas;
  • Numerical calculations together with ventilation network analysis of designed areas of operation in the conditions of methane and endogenous fires hazard occurrence;
  • Numerical calculations and design of the operation for the areas below the opening level;
  • Research and assessment of the gas hazard for the subsequent stages of excluding the workings, areas, levels and shafts from the mining operation of a liquidated mine;
  • Variant analysis of the simplification of the ventilation network model of the liquidated methane mine;
  • Development of insulation technologies of the excavations in liquidated gassy mine;
  • Developing of accumulated balance of free methane in the workings of liquidated coal mine in a conventionally accepted period of time in conjunction with hydrogeology, tectonics and the conditions related to the adjacent mines;
  • Forecast of the possibility of gas hazard occurrence on the surface of liquidated gassy coal mine within mining area
  • Research on the kinetics and intensity of the mining gases inflow to the subsurface zone in the mining area of liquidated coal mine;
  • Developing methods of active countermeasures for gas hazard in the subsurface zones in post-mining areas of liquidated coal mines.

  • Elaboration of the outburst hazard forecasting for newly developed and poorly recognized parts of deposits/coal seams,
  • Conducting in-situ measurements of basic outburst hazard coefficients applied in the coal mines i.e. methane desorption intensity, methane content, volume of the coal cuttings from the borehole and conciseness, in order to evaluate present outburst hazard or evaluating present forecast,
  • Conducting comprehensive research of the coal seam (rocks) in order to determine its outburst proneness, covering extended measurements of so called sorption abilities – i.e. desorption kinetics and diffusion coefficient,
  • Deliver the opinion concerning technical projects of mining works conducted in the conditions of outburst hazard as well as designing of the deposit (coal seam), including ventilation system and protection in the a.m. hazardous conditions,
  • Determination of the coal seam parameters classifying it into certain outburst’s hazard category and issuing the opinion concerning possibility of excluding part of the coal seam from its borders (so far) classifying into certain outburst category hazard,
  • Evaluation of the outburst prevention efficiency applied in the coal mines and elaborating preventive treatment (rules) how to perform certain mining works in the zones of increased hazard.

+ 48-32-259-2000