1. bookVolume 3 (2020): Issue 1 (August 2020)
Journal Details
License
Format
Journal
First Published
30 Sep 2018
Publication timeframe
1 time per year
Languages
English
access type Open Access

Analysis of Stoppages in the Process of Roadway Drivage Caused by Exceeding the Maximum Allowable Level of Methane Concentration

Journal Details
License
Format
Journal
First Published
30 Sep 2018
Publication timeframe
1 time per year
Languages
English
Abstract

Methane is one of the most dangerous gases occurring in mining production. Being inseparably connected with the rock mass, it presents a serious risk to occupational safety and reduces the effectiveness of mining production. A particularly high methane hazard occurs directly during exploitation in longwall headings and the drivage of roadways. Exceeding the maximum allowable level of its concentration in these headings makes it necessary to disconnect all machines until this concentration level is reduced. This leads to unscheduled downtimes of such machines, thus increasing the costs of their operation and decreasing their effectiveness. The paper demonstrates the results from the analysis of machine downtimes in the drivage of roadways, caused by excessive methane concentration levels. The analyses were based on the indications from the system for automatic monitoring of the ventilation parameters in this heading. The results obtained clearly demonstrated that exceeded values of methane concentration caused a series of unexpected downtimes in the drivage process. As a result, the process was disturbed and its effectiveness reduced. The presented analyses are one of the first to address the issue of how methane emissions affect machine downtimes. However, this phenomenon represents a major problem that needs to be addressed comprehensively in order to minimise the losses arising out of the necessary disruptions to the exploitation process.

Keywords

Branny, M. and Filipek, W. (2008). Numerical simulation of ventilation of blind drifts with a force-exhaust overlap system in the condition of methan and dust hazards. Arch. Min. Sci., 53, pp. 221-234. Search in Google Scholar

Brodny, J. and Tutak, M. (2016a). Analysis of methane emission into the atmosphere as a result of mining activity. Proceedings of 16th International Multidisciplinary Scientific GeoConference SGEM 2016, DOI: 10.5593/SGEM2016/HB43/S06.012. Search in Google Scholar

Brodny, J. and Tutak, M. (2016b). Analysis of gases emitted into the atmosphere during an endogenous fire. Proceedings of 16th International Multidisciplinary Scientific GeoConference SGEM 2016, pp. 75-82. DOI: 10.5593/SGEM2016/HB43/S06.011. Search in Google Scholar

Brodny, J. and Tutak, M. (2018). Analysis of methane hazard conditions in mine headings. Tehnički vjesnik/Technical Gazette, 25 (1), pp. 271-276. DOI:10.17559/TV-20160322194812. Search in Google Scholar

Brodny, J. and Tutak, M. (2019a). Forecasting the distribution of methane concentration levels in mine headings by means of model-based tests and in-situ measurements. Arch. Control Sci., 29, pp. 25-39. Search in Google Scholar

Brodny, J. and Tutak, M. (2019b). Analysing the utilisation effectiveness of mining machines using independent data acquisition systems: a case study. Energies, 12 (13), art. no. 2505. Search in Google Scholar

Dziurzyński, W., Pałka, T., Krach, A. and Wasielewski, S. (2015). Rozwój systemów symulacji procesu przewietrzania w rejonie ściany z uwzględnieniem czujników systemu gazometrii. Prace Instytutu Mechaniki Górotworu PAN, 17, pp. 3-19. Search in Google Scholar

Krause, E. (2005). Profilaktyka w pokładach metanowych zagrożonych sejsmicznie. Prace Naukowe GIG - Górnictwo i Środowisko, 3, pp. 65-79. Search in Google Scholar

Krause, E. (2015). Krótkoterminowe prognozy wydzielania się metanu podczas wybierania ścian. Archives of Mining Sciences, 60(2), pp. 629-642. Search in Google Scholar

Krause, E., and Dziurzyński, W. (2015). Projektowanie eksploatacji pokładów węgla kamiennego w warunkach skojarzonego zagrożenia metanowo-pożarowego. Główny Instytut Górnictwa, Katowice. Search in Google Scholar

Krause, E. (2019). Zagrożenie metanowe w kopalniach węgla kamiennego. Główny Instytut Górnictwa, Katowice. Search in Google Scholar

Kurnia, J.C., Sasmito, A.P. and Mujumdar, A.S. (2014). Simulation of a novel intermittent ventilation system for underground mines. Tunnelling and Underground Space Technology, 42, pp. 206-215. Search in Google Scholar

Ordinance of the Minister of Energy On detailed requirements for conducting underground mining operations of 23 November 2016 (Journal of Laws of 2016, No. 2017, item 1118, as amended). Search in Google Scholar

Szlązak, N. (2013). Metody odmetanowania pokładów węgla w górnictwie podziemnym. Górnictwo i Geologia, 8(4), pp. 75-88. Search in Google Scholar

Szlązak, N. and Borowski, D. (2006). Badania wydzielania metanu do wyrobisk chodnikowych drążonych kombajnami w pokładach węgla. Górnictwo i Geoinżynieria, 30, pp. 45-56. Search in Google Scholar

Tutak, M. and Brodny, J. (2017). Analysis of Influence of Goaf Sealing from Tailgate On the Methane Concentration at the Outlet from the Longwall. IOP Conf. Series: Earth and Environmental Science 95 042025 doi :10.1088/1755-1315/95/4/042025. Search in Google Scholar

Tutak, M. and Brodny, J. (2018). Analysis of the impact of auxiliary ventilation equipment on the distribution and concentration of methane in the tailgate. Energies, 11, 3076. Search in Google Scholar

Tutak, M. and Brodny, J. (2019). Predicting Methane Concentration in Longwall Regions Using Artificial Neural Networks. Int. J. Environ. Res. Public Health, 16, 1406 Search in Google Scholar

Tutak, M. (2020). The influence of the permeability of the fractures zone around the heading on the concentration and distribution of methane. Sustainability,12(1), art. no. 16. Search in Google Scholar

Recommended articles from Trend MD

Plan your remote conference with Sciendo