№69-06
Influence of oxygen content on the manifestation of hazardous properties of coal seams
Ye. Rudniev1, М. Antoshchenko1, Е. Filatieva1, M. Filatiev1
1 Volodymyr Dahl East Ukrainian National University, Severodonetsk, Ukraine
Coll.res.pap.nat.min.univ. 2022, 69:71-82
https://doi.org/10.33271/crpnmu/69.071
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ABSTRACT
Purpose. To improve the regulatory framework for the safe conduct of mining operations, to establish the effect of mineral impurities and moisture on the accuracy of determining the oxygen content, under conditions close to those of coal seams.
Methodology is based on the fact that practically for all coal seams of Donbass and the Lvov-Volyn basin indicators of consumer qualities of solid fuels have been established, but they characterize only one organic (combustible) part per dry ash-free state. In this case, the effect of mineral impurities (their content for many reservoirs exceeds 30-40%) and moisture on the change in oxygen content is not taken into account. The manifestation of many hazardous properties of coal seams depends on the ratio of oxygen content with other components of the organic mass and mineral impurities. To bring the quality indicators of coals to a state close to the conditions of mining operations, they were recalculated for each coal seams, taking into account the actual yield of ash and total moisture.
Findings. The indicator of the release of volatile substances used in the normative documents for the safe conduct of mining operations for assessing the metamorphic transformations of coal seams does not determine the type of coal by their reduction. Restorability determines the properties of the organic mass based on the ratio of oxygen to its other main components. In addition to the organic mass in the dry ash-free state, the composition of solid fuels includes mineral impurities and moisture. They significantly affect the change in the ratio between the main components. The carbon content in the organic (combustible) mass is more informative in comparison with the yield of volatile substances, an indicator. It functionally controls the sum of the remaining components - hydrogen, nitrogen, sulfur and oxygen. To a lesser extent, but rather high, the closeness of the correlation interdependence was established between the content of oxygen and carbon in the dry ash-free state of the fuel. Such interdependence is completely eliminated when considering the fuel for its working condition, which indicates the random nature of the relationship between the main components of the organic mass and mineral impurities, including moisture, for each considered coal seams.
Originality. For the first time, on the basis of statistical processing of experimental data on the quality of coals for almost all coal seams of the Donbass and the Lviv-Volyn basins, the possible limits of the oxygen content for the working state of the fuel were established, which makes it possible to individually consider for each coal seam the ratio between the main components of the organic mass and mineral impurities, including the presence of moisture.
Practical implications. The research results make it possible to develop proposals for improving the regulatory framework in terms of predicting the hazardous properties of coal seams during mining operations.
Keywords: coal, metamorphism, reduction, oxygen, mass, organic, mineral impurities, dry, ashless, working, coal seams, safety, regulatory framework, improvement.
References
1. GOST 17070-2014. Mezhgosudarstvennyy standart. Ugli. Terminy i opredeleniya Izdanie ofitsialnoe. (2015). Standartinform.
2. Kozlovskiy, E.A. (1987). Gornaya entsiklopediya. T.3: Kengan-Ort. Sovetskaya entsiklopediya.
3. Geologo-uglekhimicheskaya karta Donetskogo basseyna. (1954). Ugletekhizdat.
4. Kozlovskiy, E.A. (1984). Gornaya entsiklopediya. T.1: Aa-lava-Geosistema. Sovetskaya entsiklopediya.
5. GOST 25543-2013. Mezhgosudarstvennyy standart. Ugli burye, kamennye i antratsity. Klassifikatsiya po geneticheskim i tekhnologicheskim parametram. Izdanie ofitsialnoe. (2014). Standartinform.
6. Avgushevich, I.V., Sidoruk, E.I., & Bronovets, T.M. (2019). Standartnye metody ispytaniya ugley. Klassifikatsii ugley. «Reklama master».
7. Rukovodstvo po borbe s pylyu v ugolnykh shakhtakh. (1979). Nedra.
8.SOU 10.1.00174088.011–2005. Pravyla vedennia hirnychykh robit na plastakh, skhylnykh do ha-zodynamichnykh yavyshch: [Chynnyi vid 2005-12-01]. Vydannia ofitsiine. (2005). Minvuhleprom Ukrainy.
9. Rukovodstvo po proektirovaniyu ventilyatsii ugolnykh shakht. (1994). Osnova.
10. KD 12.01.402–2000. Rukovodstvo po preduprezhdeniyu i tusheniyu endogennykh pozharov na ugolnykh shakhtakh Ukrainy. (2000). NIIGD.
11. Instruktsiya po prognozu i preduprezhdeniyu vnezapnykh proryvov metana iz pochvy gornykh vyrabotok. (1987). MakNII.
12.SOU-P 10.1.00174088.016:2009. Pravyla vyznachennia efektyvnosti vyperedzhalnoho zakhystu plastiv, skhylnykh do hazodynamichnykh yavyshch. Vydannia ofitsiine. (2009). Minvuhleprom Ukrainy.
13. Katalog dinamicheskikh razlomov gornykh porod na ugolnykh shakhtakh. (1983). M-vo ugolnoy promyshlennosti SSSR, VNII gornoy geomekhaniki i marksheyderskogo dela.
14. KD 12.01.401-96. Endogennye pozhary na ugolnykh shakhtakh Donbassa. Preduprezhdenie i tushenie. Instruktsiya. Izdanie ofitsialnoe. (1997). NIIGD.
15. SOU 10.1.0017-4088.011-2004. Degazatsiya ugolnykh shakht. Trebovaniya k sposobam i skhemy degazatsii. Izdanie ofitsialnoe. (2004). Mintopenergo Ukrainy.
16.Skhemy ta sposoby keruvannia hazovydilenniam na vyimkovykh dilnytsiakh vuhilnykh shakht. Derzhavnyi normatyvnyi akt pro okhoronu pratsi. (2006). Derzhavnyi departament promyslovoi bezpeky, okhorony pratsi y hirnychoho nahliadu.
17. Spravochnik po kachestvu i obogatimosti kamennykh ugley i antratsitov Ukrainskoy SSR (Donbass v granitsakh USSR, Lvovsko-Volynskiy basseyn). Kharakteristika kachestva kamennykh ugley i antratsitov Ukrainskoy SSR. (1965). Nedra.
18. Spravochnik po kachestvu kamennykh ugley i antratsitov Donetskogo i Lvovsko-Volynskogo basseynov. Donetskiy nauchno-issledovatelskiy ugolnyy institut.(1972). Nedra.
19. GOST 27313-95 (ISO 1170-77) Mezhgosudarstvennyy standart. Toplivo tverdoe mineralnoe Oboznacheniya pokazateley kachestva i formuly perescheta rezultatov analiza dlya razlichnykh sostoyaniy topliva. Izdanie ofitsialnoe.(2003). Mezhgosudarstvennyy sovet po standartizatsii, metrologii i sertifikatsii.
20.Antoshchenko, M., Tarasov, V., Zaika, R., Zakharova, A., & Kukota O. (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.
