The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation

In coal mines that are exploiting methane-saturated seams, high-level emission of methane is often the basic limitation for modern and high-efficiency longwall complexes. This paper presents selected observations and tests carried out in the Cw-4 longwall in seam 364/2 of the Budryk mine, which belo...

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Autores principales:	Wacław Dziurzyński, Andrzej Krach, Teresa Pałka, Stanisław Wasilewski
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	monitoring of methane concentration ventilation of mines measurements of ventilation parameters Technology T
Acceso en línea:	https://doaj.org/article/2a3c4f3ba88643a298ea1de751da46e5
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spelling	oai:doaj.org-article:2a3c4f3ba88643a298ea1de751da46e52021-11-11T15:44:40ZThe Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation10.3390/en142169071996-1073https://doaj.org/article/2a3c4f3ba88643a298ea1de751da46e52021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/6907https://doaj.org/toc/1996-1073In coal mines that are exploiting methane-saturated seams, high-level emission of methane is often the basic limitation for modern and high-efficiency longwall complexes. This paper presents selected observations and tests carried out in the Cw-4 longwall in seam 364/2 of the Budryk mine, which belongs to JSW SA. To observe the methane levels in the Cw-4 longwall, additional sensors were installed at the end section of the longwall from the side of the gobs, and the air velocity and methane concentration were registered in a multi-point system that were built in the selected longwall cross-section. The air parameters were recorded in the monitoring system. The use of multi-point simultaneous measurements of the local velocities and concentrations of methane in the longwall cross-section allowed for the precise determination of the air and methane volume flow using the velocity field method. This allowed us to perform a comparative analysis of the obtained records of the air parameters using special software to determine the distribution of the parameters in the cross-section of the excavation. An important element of the study was the simultaneous registration of the methane concentration in the longwall, information on the operating times, the direction of shearer operation, and the type of work being done (i.e., mining/cleaning).Wacław DziurzyńskiAndrzej KrachTeresa PałkaStanisław WasilewskiMDPI AGarticlemonitoring of methane concentrationventilation of minesmeasurements of ventilation parametersTechnologyTENEnergies, Vol 14, Iss 6907, p 6907 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	monitoring of methane concentration ventilation of mines measurements of ventilation parameters Technology T
spellingShingle	monitoring of methane concentration ventilation of mines measurements of ventilation parameters Technology T Wacław Dziurzyński Andrzej Krach Teresa Pałka Stanisław Wasilewski The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation
description	In coal mines that are exploiting methane-saturated seams, high-level emission of methane is often the basic limitation for modern and high-efficiency longwall complexes. This paper presents selected observations and tests carried out in the Cw-4 longwall in seam 364/2 of the Budryk mine, which belongs to JSW SA. To observe the methane levels in the Cw-4 longwall, additional sensors were installed at the end section of the longwall from the side of the gobs, and the air velocity and methane concentration were registered in a multi-point system that were built in the selected longwall cross-section. The air parameters were recorded in the monitoring system. The use of multi-point simultaneous measurements of the local velocities and concentrations of methane in the longwall cross-section allowed for the precise determination of the air and methane volume flow using the velocity field method. This allowed us to perform a comparative analysis of the obtained records of the air parameters using special software to determine the distribution of the parameters in the cross-section of the excavation. An important element of the study was the simultaneous registration of the methane concentration in the longwall, information on the operating times, the direction of shearer operation, and the type of work being done (i.e., mining/cleaning).
format	article
author	Wacław Dziurzyński Andrzej Krach Teresa Pałka Stanisław Wasilewski
author_facet	Wacław Dziurzyński Andrzej Krach Teresa Pałka Stanisław Wasilewski
author_sort	Wacław Dziurzyński
title	The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation
title_short	The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation
title_full	The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation
title_fullStr	The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation
title_full_unstemmed	The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation
title_sort	impact of cutting with a shearer on the conditions of longwall ventilation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2a3c4f3ba88643a298ea1de751da46e5
work_keys_str_mv	AT wacławdziurzynski theimpactofcuttingwithashearerontheconditionsoflongwallventilation AT andrzejkrach theimpactofcuttingwithashearerontheconditionsoflongwallventilation AT teresapałka theimpactofcuttingwithashearerontheconditionsoflongwallventilation AT stanisławwasilewski theimpactofcuttingwithashearerontheconditionsoflongwallventilation AT wacławdziurzynski impactofcuttingwithashearerontheconditionsoflongwallventilation AT andrzejkrach impactofcuttingwithashearerontheconditionsoflongwallventilation AT teresapałka impactofcuttingwithashearerontheconditionsoflongwallventilation AT stanisławwasilewski impactofcuttingwithashearerontheconditionsoflongwallventilation
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The Impact of Cutting with a Shearer on the Conditions of Longwall Ventilation

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