Numerical simulation of methane distribution in development zones of underground coal mines equipped with auxiliary ventilation

2019 ◽  
Vol 89 ◽  
pp. 68-77 ◽  
Author(s):  
Fakhrossadat Hasheminasab ◽  
Raheb Bagherpour ◽  
Saiied M. Aminossadati
Keyword(s):  
Numerical Simulation ◽  
Coal Mines ◽  
Underground Coal Mines ◽  
Methane Distribution

scholarly journals Numerical Simulation of Coal Microwave Heating and Evaluation of The Reliability of The Results By Changing The Parameters Affecting It

2021 ◽  
Author(s):  
Ali Jebelli ◽  
Arezoo Mahabadi ◽  
Rafiq Ahmad
Keyword(s):  
Numerical Simulation ◽  
Thermal Stress ◽  
Microwave Heating ◽  
Coalbed Methane ◽  
Coal Mines ◽  
Effective Parameters ◽  
Mining Operations ◽  
Thermal Fields ◽  
Underground Coal Mines ◽  
Increase Rate

Abstract In most mines, methane gas is accumulated in pores inside coal, the highest amount of which is found in coal mines, and methane is the most important polluting gas in underground coal mines. In coal mining operations, coalbed methane is one of the potential hazards that must be extracted to prevent an explosion of the accumulated gas and environmental pollution. One of the mechanisms is using microwave irradiation so that the thermal stress caused by microwave heating generates fractures. In this research, we investigated the most important parameters affecting the electric and thermal fields’ distribution in coal in order to identify the effective parameters that achieve the highest temperature increase rate and to reach the highest impact and efficiency of the system with the least amount of consumed energy. The results of this study show that the most effective parameter on the electric and thermal fields’ distribution within coal is the size of the resonance chamber.

A new simple methodology for evaluation of explosion risk in underground coal mines

2013 ◽  
Vol 26 (6) ◽  
pp. 1524-1529 ◽  
Author(s):  
Ljiljana Medic Pejic ◽  
Javier García Torrent ◽  
Enrique Querol ◽  
Kazimierz Lebecki
Keyword(s):  
Coal Mines ◽  
Underground Coal Mines ◽  
Explosion Risk
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