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 utilization.
  • 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 climatic hazard state forecasts for designed workings ventilated with separate air tubing system.
  • Elaboration of the climatic hazard state forecasts for designed workings ventilated with circular ventilation system.
  • Elaboration of group air-conditioning conceptual designs.
  • Elaboration of expert’s opinion in charge of mining plant operation in the group XX (Climatic Hazard) concerning prophylaxis aiming to provide right supplementary climate temperature in the workings developed in the rock mass, which incipient temperature is higher than 40oC.
  • Elaboration of the maps of forecasted incipient temperature iso-lines course for the seams or exploitation levels.
  • Performing the measurements and efficiency analysis of mining cooling equipment based on  „in situ” measurements.
  • Performing the measurements of rocks’ incipient temperature based on the standard PN-G-04038 issued in March 1998.

Department experts eligibilities:

Gas Hazard Department, which is part of Experimental mine „Barbara” in Mikołów - Central Mining Institute of Katowice holds the expert’s eligibility in the following domains:

  • XV (Methane and Coal Dust Hazards) in the following extent:
    • performing the tests and issuing the opinions for the purposes of classifying the seam, bed or their parts into certain methane category in underground mining plants (§ 11 point 4 of Polish Minister of Environment regulation dated January 29, 2013 in re natural hazards in mining plants; J.L. from 2015 pos. 1702, with its later changes, hereafter called „hazard regulation”) ,
    • pronouncing the opinions on technical projects, mentioned in § 38 of Polish Minister of Energy regulation dated November 23rd,  2016 concerning detailed requirements in re running the underground mining plants; J.L. from 2017 pos. 1118, hereafter called „labour safety regulation”, for the coal panels’ ventilation districts, where absolute methane-bearing capacity forecast anticipates exceeding 40 m3/min (§ 244 labour safety regulation),
    • performing methane hazard state tests in case of finding methane with its concentration of 0.5% or more in the air samples collected for lab analysis from non-methane fields, or in the mining plants excavating hard coal in the coal seam with its methane content exceeding  0.1 m3/Mgdaf (§ 272 point 3 labour safety regulation),
    • performing the tests in order to determine coal seams’ methane content (§ 277 section 2 labour safety regulation),
    • elaboration forecasts of absolute methane-bearing capacity of coal faces and galleries in not developed parts of the bed (§ 283 of labour safety regulation),
    • pronouncing the opinions on technical projects, mentioned in § 38 of labour safety regulation, concerning coal seams’ exploitation classified as II - IV methane hazard category in the coal plant’s mining acreage boarders without leaving safety (§ 284 of labour safety regulation),
    • elaboration of the coal panels’ excavation rules in methane hazard conditions, to use auxiliary ventilation equipment (§ 298 point 4 of labour safety regulation),
    • determination of methane content (its natural origin) in the coal by direct method (point 2.1.1. of annexe # 3 to labour safety regulation),
    • performing additional tests, if methane content in the coal determined by desorbometric method shows significant increase of methane content in the bed (point 2.1.3. of annex # 3 to labour safety regulation),
    • performing the tests and determining natural origin methane content in the coal in case when methane or other flammable gases content in the test borehole exceeds 1% (point 2.1.5. of annex # 3 to labour safety regulation),
    • conducting the tests of bed methane content in the seam recognized so far as non methane-one in case when methane or total flammable gases content is 1% or higher in the gas samples collected from the exploratory boreholes (point 2.3.12. of annex # 3 to labour safety regulation),
  • XVI (Fire Hazard) in the following extent:
    • pronouncing the opinions on the deep heading rules when the average working or ventilation siding descend is more than 10o,
    • performing the completion tests of the permanent fuelling chambers, lubricants’ chambers  which are equipped with permanent self-activating extinguishing installation  (§ 488 section  2 of Polish Minister of Energy regulation dated November 23, 2016 concerning detailed requirements in re running the underground mining plants; J.L. from 2017 pos. 1118, hereafter called „labour safety regulation”),
    • elaboration the instruction determining temperature and mass of heated coal, mentioned in the points 7.17.2 and 7.17.3 annexe # 3 to labour safety regulation (point 7.17.4 annexe # 3 to labour safety regulation).
  • XVIII (Gas and Rock Outbursts Hazard) in the following extent:
    • performing the tests and issuing the opinions for the purposes of classifying the seam, bed or their parts into certain gas and rock outbursts hazard category in underground mining plants (§ 16 point 5 of hazard regulation),
    • determination of the evaluation criteria of gas and rock outbursts hazard state based on the sorption properties and volatile matters content in the coal (§ 380 section 3 of labour safety regulation),
    • elaboration of the outburst hazard forecasts for newly developed part of the deposit in the mining plants exploiting coal seams hazardous to gas and rocks outbursts, when determined methane content is not smaller than 4.5 m3CH4/Mgdaf  (§ 397 section 3 of labour safety regulation),
    • issuing the annexe opinions to the guidelines on conducting gas hazard development and potential gas and geo-dynamic phenomena and conducting mining works in the conditions of their possible occurrence in the mining plants extracting cooper ore, which are essential for the plant operator for recognition and control of gas and rock outburst hazard state as well as for conducting safe mining operations (point 3.5.1. annex # 3 of labour safety regulation).
  • XX (Climatic Hazard ) in the following extent:
    • pronouncing the opinions on prophylaxis aiming to provide right supplementary climate temperature in the workings developed in the rock mass, which incipient temperature is higher than 40oC, according to § 445 section 2 of Polish Minister of Energy regulation dated November 23, 2016 concerning detailed requirements in re running the underground mining plants.
  • Determination of methane content using direct method.
  • Desorption tests using United States Bureau of Mines (USBM) method.
    Tests include:
    • Determination of lost gas, desorbing gas and residual gas,
    • Determination of the composition of desorbing and residual gas by gas chromatography,
    • Determination of final methane content.
  • Determination of physical and chemical parameters of solid fuels:
    • ash content (A),
    • expiring moisture (Wex),
    • hygroscopic moisture (Wh),
    • moisture in the analitical sample (Wa),
    • total moisture (Wt)
    • voltalite matter (Vdaf),
    • density by helium pycnometry (dr).
  • Research on the desorption of methane from coal under variable hydrostatic pressure conditions.
  • Determining coefficient of rocks’ conciseness (fz).
  • Chromatographic analysis of mine air: O2, N2, H2, CO2, CO, CH4, C2H6, C2H4.
  • Chromatographic analysis of the following gases:  O2, N2, H2, CO2, CO, CH4, C2H6, C2H4, C2H2, C3H8, C3H6, n- C4H10.
  • Detection of flammable and toxic gases hazardous concentrations: O2, CO2, CO, CH4, H2S, SO2, NO2, NO.
  • Determination of sorption parameters:
    • effective diffusion coefficient (De),
    • sorption capacity (a),
    • sorption capacity calculating into daf (adaf),
    • sorption half-time (t0,5),
    • determination of sorption isotherms based on Langmuir isotherm model.

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 utilization;
  • 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