№67-05

Elemental hydrogen content and forecast of hazardous properties of coal seams

Ye. Rudniev¹, V. Galchenko¹, Е. Filatieva¹, М. Antoshchenko¹

¹Volodymyr Dahl East Ukrainian National University

Coll.res.pap.nat.min.univ. 2021, 67:53-64

https://doi.org/10.33271/crpnmu/67.053

Full text (PDF)

ABSTRACT

Purpose. To establish the effect of mineral impurities and moisture on the accuracy of determining the hydrogen content, under conditions close to the conditions of mining, is to consider the possibility of using experimental data on the hydrogen content on a dry ashless mass to predict the hazardous properties of coal seams after recalculating the hydrogen content values corrected for the mineral content impurities and total (reservoir) moisture.

Methodology. The research methodology consists in the fact that the consumer qualities of solid fuel are determined on the basis of analytical samples brought to an air-dry state (analytical state). Results expressed at other fuel states are estimates. The recalculation is carried out on the basis of ash content, moisture content and mineral content.

Findings. The presence in reservoir samples of the natural content of mineral impurities and total moisture have a significant impact on the results of the conversion of the hydrogen content to the working condition of coal. A significant deviation of individual values from the averaging straight line does not allow using the averaged values of the hydrogen content listed for the working state of coal to determine the hazardous properties of a particular coal seam. Consideration of the relationship between the components after they have been brought into working condition of coal based on the actual formation ash content and total moisture content led to a redistribution of the influence of factors on the hydrogen content. The natural random presence of mineral impurities and different values of total moisture in reservoir samples eliminated the monopole metamorphic dependence of the hydrogen content in the dry organic ash-free mass on carbon.

Originality. For the first time, the opposite nature of the change in the content of hydrogen from carbon was established for individual aggregates of mines. When considering coal samples for a dry ash-free state, a decrease in hydrogen content is observed as metamorphic transformations intensify, and when analyzing reservoir samples, on the contrary, an increase in metamorphism causes a directly proportional increase in hydrogen content in three characteristic zones.

Practical implications. The research results are necessary to improve the regulatory framework for the safe mining of coal seams, since in its development indicators of the degree of metamorphism were used, referred to the dry ash-free state.

Keywords: coal seams, coal, grade, metamorphism, hydrogen, sample, condition, properties, divergence, mining, hazard, regulatory framework, improvement.

References

1. GOST 17070-2014. Mezhgosudarstvennyy standart. Ugli. Terminy i opredeleniya Izdanie ofitsial'noe. (2015). Moskva: Standartinform.
2. Rukovodstvo po bor'be s pyl'yu v ugol'nykh shakhtakh. (1979). Moskva: Nedra.
3. SOU 10.1.00174088.011–2005. Pravyla vedennia hirnychykh robit na plastakh, skhylnykh do hazodynamichnykh yavyshch: [Chynnyi vid 2005-12-01]. Vydannia ofitsiine. (2005). Kyiv: Minvuhleprom Ukrainy.
4. Rukovodstvo po proektirovaniyu ventilyatsii ugol'nykh shakht. (1994). Kiev: Osnova.
5. KD 12.01.402–2000. Rukovodstvo po preduprezhdeniyu i tusheniyu endogennykh pozharov na ugol'nykh shakhtakh Ukrainy. (2000). Donetsk: NIIGD.
6. Instruktsiya po prognozu i preduprezhdeniyu vnezapnykh proryvov metana iz pochvy gornykh vyrabotok. (1987). Makeevka: MakNII.
7. SOU-P 10.1.00174088.016:2009. Pravyla vyznachennia efektyvnosti vyperedzhalnoho zakhystu plastiv, skhylnykh do hazodynamichnykh yavyshch. Vydannia ofitsiine. (2009). Kyiv: Minvuhleprom Ukrainy.
8. Katalog dinamicheskikh razlomov gornykh porod na ugol'nykh shakhtakh. (1983). Leningrad: M-vo ugol'noy promyshlennosti SSSR, VNII gornoy geomekhaniki i marksheyderskogo dela.
9. KD12.01.401-96. Endogennye pozhary na ugol'nykh shakhtakh Donbassa. Preduprezhdenie i tushenie. Instruktsiya. Izdanie ofitsial'noe. (1997). Donetsk: NIIGD.
10. SOU 10.1.0017-4088.011-2004. Degazatsiya ugol'nykh shakht. Trebovaniya k sposobam i skhemy degazatsii. Izdanie ofitsial'noe. (2004). Kiev: Mintopenergo Ukrainy.
11. Skhemy ta sposoby keruvannia hazovydilenniam na vyimkovykh dilnytsiakh vuhilnykh shakht. Derzhavnyi normatyvnyi akt pro okhoronu pratsi. (2006). Kyiv: Derzhavnyi departament promyslovoi bezpeky, okhorony pratsi y hirnychoho nahliadu.
12. Spravochnik po kachestvu kamennykh ugleyi antratsitov Donetskogo i L'vovsko-Volynskogo basseynov. Donetskiy nauchno-issledovatel'skiy ugol'nyy institut. (1972). Moskva: Nedra.
13. Avgushevich, I.V., Sidoruk, E.I., & Bronovets, T.M. (2019).Standartnye metody ispytaniya ugley. Klassifikatsii ugley. Moskva: «Reklama master».
14. GOST 27313-95 (ISO 1170-77) Mezhgosudarstvennyy standart. Toplivo tverdoe mineral'noe Oboznacheniya pokazateley kachestva i formuly perescheta rezul'tatov analiza dlya razlichnykh sostoyaniy topliva. Izdanie ofitsial'noe. (2003). Minsk: Mezhgosudarstvennyy sovet po standartizatsii, metrologii i sertifikatsii.
15. Tarasov, V., Antoshchenko, M., Rudniev, Ye., & GalchenkoA. (2020). Forecasting propensity method of mine layers to endogenous fire hazard by metamorphic signs of coals transformation. Österreichisches Multiscience Journal, 67-74.
16. Antoshchenko, M., Tarasov, V., Zaika, R., Zakharova, A., & KukotaO. (2020). Moisture and organic mass components as indicators of metamorphism and dangerous properties of coal seams. Modern engineering and innovative technologies, 13 (3), 60-75.