1. bookVolume 3 (2020): Edizione 1 (August 2020)
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License
Formato
Conferenza
eISSN
2545-2843
Prima pubblicazione
30 Sep 2018
Frequenza di pubblicazione
1 volta all'anno
Lingue
Inglese
access type Accesso libero

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

Pubblicato online: 10 Aug 2020
Volume & Edizione: Volume 3 (2020) - Edizione 1 (August 2020)
Pagine: 197 - 210
Ricevuto: 01 Feb 2020
Accettato: 01 Mar 2020
Conferenza Dettagli
License
Formato
Conferenza
eISSN
2545-2843
Prima pubblicazione
30 Sep 2018
Frequenza di pubblicazione
1 volta all'anno
Lingue
Inglese
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

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