Gas-dynamic processes affecting coal mine radon hazard
The paper focuses on vertical migration of radon in surrounding rocks described by Fick's first law as well as by the continuity equation for diffusion flow, with allowance for sorption and radioactive decay processes. Taking into account special characteristics of vertical radon diffusion, the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Saint-Petersburg Mining University
2017-02-01
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| Series: | Записки Горного института |
| Online Access: | https://pmi.spmi.ru/index.php/pmi/article/view/9401?setLocale=en_US |
| _version_ | 1797947132202713088 |
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| author | V. I. Efimov A. B. Zhabin G. V. Stas' |
| author_facet | V. I. Efimov A. B. Zhabin G. V. Stas' |
| author_sort | V. I. Efimov |
| collection | DOAJ |
| description | The paper focuses on vertical migration of radon in surrounding rocks described by Fick's first law as well as by the continuity equation for diffusion flow, with allowance for sorption and radioactive decay processes. Taking into account special characteristics of vertical radon diffusion, the process can be considered stable. It is demonstrated that for productive areas it is feasible to consider one-dimensional convective diffusion, as diffusive transport of radon by the air of productive areas occurs at steady-state conditions. Normally the factor of radon emissions prevails if atmospheric pressure is constant. Amount of air, calculated using this factor, by 20-30 % exceeds the one needed to dilute carbon dioxide to maximum allowed concentration (MAC). |
| first_indexed | 2024-04-10T21:22:58Z |
| format | Article |
| id | doaj.art-947a2fab9ed84e118b158e7ed47ebaf0 |
| institution | Directory Open Access Journal |
| issn | 2411-3336 2541-9404 |
| language | English |
| last_indexed | 2024-04-10T21:22:58Z |
| publishDate | 2017-02-01 |
| publisher | Saint-Petersburg Mining University |
| record_format | Article |
| series | Записки Горного института |
| spelling | doaj.art-947a2fab9ed84e118b158e7ed47ebaf02023-01-20T02:04:57ZengSaint-Petersburg Mining UniversityЗаписки Горного института2411-33362541-94042017-02-0122310910910.18454/pmi.2017.1.1099401Gas-dynamic processes affecting coal mine radon hazardV. I. Efimov0A. B. Zhabin1G. V. Stas'2JSC Holding «SDS-Coal»Tula State UniversityTula State UniversityThe paper focuses on vertical migration of radon in surrounding rocks described by Fick's first law as well as by the continuity equation for diffusion flow, with allowance for sorption and radioactive decay processes. Taking into account special characteristics of vertical radon diffusion, the process can be considered stable. It is demonstrated that for productive areas it is feasible to consider one-dimensional convective diffusion, as diffusive transport of radon by the air of productive areas occurs at steady-state conditions. Normally the factor of radon emissions prevails if atmospheric pressure is constant. Amount of air, calculated using this factor, by 20-30 % exceeds the one needed to dilute carbon dioxide to maximum allowed concentration (MAC).https://pmi.spmi.ru/index.php/pmi/article/view/9401?setLocale=en_US |
| spellingShingle | V. I. Efimov A. B. Zhabin G. V. Stas' Gas-dynamic processes affecting coal mine radon hazard Записки Горного института |
| title | Gas-dynamic processes affecting coal mine radon hazard |
| title_full | Gas-dynamic processes affecting coal mine radon hazard |
| title_fullStr | Gas-dynamic processes affecting coal mine radon hazard |
| title_full_unstemmed | Gas-dynamic processes affecting coal mine radon hazard |
| title_short | Gas-dynamic processes affecting coal mine radon hazard |
| title_sort | gas dynamic processes affecting coal mine radon hazard |
| url | https://pmi.spmi.ru/index.php/pmi/article/view/9401?setLocale=en_US |
| work_keys_str_mv | AT viefimov gasdynamicprocessesaffectingcoalmineradonhazard AT abzhabin gasdynamicprocessesaffectingcoalmineradonhazard AT gvstas gasdynamicprocessesaffectingcoalmineradonhazard |