Numerical Simulation Study on Gas Distribution Law in Goaf of Thick Coal Seam Mining Face

Zuoquan Li; Jufeng Zhang; Yadong Xie; Jiye Quan; Zaiquan Miao; Jianjiang Zhang

doi:10.54691/tgd5vj25

Authors

Zuoquan Li
Jufeng Zhang
Yadong Xie
Jiye Quan
Zaiquan Miao
Jianjiang Zhang

DOI:

https://doi.org/10.54691/tgd5vj25

Keywords:

Goaf Area, Comprehensive Mining, Gas Distribution, Numerical Simulation.

Abstract

To study the gas distribution law in the goaf of low-permeability and extra-thick coal seam comprehensive mining working face, Fluent simulation software is used to numerically simulate the gas distribution law of the goaf in the east 102 working face of the mine. The results show that under the comprehensive mining conditions of the U-shaped upwind ventilation working face, the high concentration gas in the deep part of the goaf accumulates on the return air side, forming a gas-rich area, with the highest gas concentration reaching 70%. The simulation results are basically consistent with the field measurement data, providing important theoretical support for the implementation of gas extraction measures in the goaf.

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