Next Article in Journal
Phase-Locked Loop Research of Grid-Connected Inverter Based on Impedance Analysis
Next Article in Special Issue
Numerical Investigation of an OxyfuelNon-Premixed CombustionUsing a Hybrid Eulerian Stochastic Field/Flamelet Progress Variable Approach: Effects of H2/CO2 Enrichment and Reynolds Number
Previous Article in Journal
Robust Optimization of Power Consumption for Public Buildings Considering Forecasting Uncertainty of Environmental Factors
Previous Article in Special Issue
Prediction of the Maximum Erosion Rate of Gas–Solid Two-Phase Flow Pipelines
Article Menu
Issue 11 (November) cover image

Export Article

Open AccessArticle
Energies 2018, 11(11), 3076;

Analysis of the Impact of Auxiliary Ventilation Equipment on the Distribution and Concentration of Methane in the Tailgate

Faculty of Mining and Geology, Silesian University of Technology, 44-100 Gliwice, Poland
Faculty of Organization and Management, Silesian University of Technology, 44-100 Gliwice, Poland
Author to whom correspondence should be addressed.
Received: 7 October 2018 / Revised: 30 October 2018 / Accepted: 2 November 2018 / Published: 8 November 2018
(This article belongs to the Special Issue Computational Fluid Dynamics (CFD) 2018)
PDF [9579 KB, uploaded 8 November 2018]


Methane, which is commonly found in hard coal deposits, represents a considerable threat to the safety of mining operations in these deposits. The paper presents the results of tests, aiming to limit the negative impact of methane on hard coal exploitation and improve work safety. The tests encompassed an analysis of methane concentration distributions in the tailgate (in the intersection area with the longwall), with account being taken of auxiliary ventilation equipment. This equipment is responsible for reducing methane concentration levels in the intersection area between the longwall and the tailgate. The analyses presented in the article were conducted for a spatial model of a longwall area, using the Computational Fluid Dynamics (CFD) method. Account was taken of the real-world measurements of the headings as well as the measurement data concerning methane concentration and ventilation parameters. The tests took into account methane emissions from the mined coal and from the goaf with caving. The analyses were performed for the system with and without auxiliary equipment, for different velocities of the additional air stream. This made it possible to compare both systems and determine the impact of auxiliary equipment on the distribution and concentration of methane in the most vulnerable area of exploitation. The distributions of the air and gas mixture were also determined in the analysed headings and goaf with caving. The results obtained clearly demonstrate that using auxiliary equipment has a significant effect on the ventilation parameters of the air stream and leads to reduction in methane concentrations in the most vulnerable section of the longwall. These results also confirmed the advantages of auxiliary ventilation equipment, which should contribute to their wider application in underground hard coal exploitation. View Full-Text
Keywords: methane hazard; longwall ventilation; mining exploitation; CFD methane hazard; longwall ventilation; mining exploitation; CFD

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Tutak, M.; Brodny, J. Analysis of the Impact of Auxiliary Ventilation Equipment on the Distribution and Concentration of Methane in the Tailgate. Energies 2018, 11, 3076.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top