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1 2020

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Analysis of Methane Concentration Distribution at U-Ventilated Longwall Outlet – Case Study

Niewiadomski Adam, Badura Henryk, Ivanova Tanyana N., Repko Alexandr, Yury Nikitin R.

New Trends in Production Engineering

2020

Vol. 3, Iss. 1

149 --168

The methane hazard concerns a growing number of longwalls in the Polish coal mining industry each year. Mitigating this hazard, both of work safety and economic reasons requires the application of preventive measures adequate to its level. Commonly threat level is estimated based on registered methane concentrations, which fluctuate and highly depends on the place of measurement. The article presents studies on the average and maximum methane concentrations at the longwall outlet, including analyses of the interdependence of methane concentration in methanometry sensors installation locations.