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Modelling Mine Atmosphere in a Sealed Coal Mine Volume

  • Jianwei Cheng
Chapter

Abstract

This chapter deals with the development of the time-dependent mathematical model of simulating sealed mine atmospheric gas species changes. Moreover, a 3D physical experimental model is designed to simulate an underground mine working face. The two most important influence factors, the air quantity delivered into the ventilation system and the gas release rate (GRR) in gob namely, are chosen to investigate their impact on the gas explosion region in mine gob. Numerical studies are also carried out. The Fluent software is used to simulate the air leakage through working face to the gob. Different ventilation systems, such as U, W, U + L, Y and J types, are simulated respectively. The variation of methane concentration in the gob is analysed and the zone within gas explosion limits concentration is also predicted.

Keywords

Simulation model Dynamic atmosphere changes Physical simulation Gob gas Numerical simulation Ventilation parameters Ventilation system 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Jianwei Cheng
    • 1
  1. 1.College of Safety EngineeringChina University of Mining and TechnologyXuzhouChina

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