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ZHANG Yu, HAO Fuchang. Prediction of gas emission from landing coal during driving based on gas desorption law[J]. Safety in Coal Mines, 2021, 52(4): 20-24,30.
Citation: ZHANG Yu, HAO Fuchang. Prediction of gas emission from landing coal during driving based on gas desorption law[J]. Safety in Coal Mines, 2021, 52(4): 20-24,30.
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Prediction of gas emission from landing coal during driving based on gas desorption law

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  • Published Date: April 19, 2021
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  • In order to accurately predict gas emission from landing coal during driving, a large-scale gas desorption experiment system was set up, a gas desorption experiment was performed under different gas pressure conditions, and the gas desorption law of 3# coal in Yuwu Coal Industry was studied, and prediction model of gas emission from landing coal during driving was established, and the gas emission from landing coal during driving at different gas pressures and different heading speeds was predicted, and the main factors affecting gas emission from landing coal was identified. The research results show that the gas desorption of 3# coal in Yuwu Coal Industry adopts a logarithmic function formula with high fitting accuracy. The fitting parameters A and B are controlled by the gas pressure or gas content. The main factors influencing gas emission from landing coal are the original gas pressure or gas content, coal cutting speed, and staying time of landing coal, which provides a parameter basis for the ventilation design of the working face and the formulation of gas prevention measures.
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