Numerical simulation study on the movement law of gas in fractured space during coal mining
by Huaiwei Wang; Guang Shi
International Journal of Mining and Mineral Engineering (IJMME), Vol. 15, No. 2, 2024

Abstract: In order to study the gas movement law in fractured space of coal mining, 3D modelling software Solidworks was used to build a model, which subsequently was imported into COMSOL to simulate the gas distribution in the fractured space of mining. The findings showed that gas distribution surrounded the intake airway in the form of a fan, and the gas was removed by the fresh airflow, resulting in a gas concentration of only 0.1 mol/m³. In areas far away from the working face, the gas concentration held steady at the initial value (0.8 mol/m³). The gas concentration near the air outlet and the high-level drainage outlet was largely unaffected by the initial concentration, which was roughly proportionate to the gas concentration in the edge area of the affected area. It was demonstrated that decreasing the gas concentration in the fringe area can be achieved by increasing the inlet air volume.

Online publication date: Fri, 19-Jul-2024

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