张 羽, 郝富昌. 基于瓦斯解吸规律的掘进落煤瓦斯涌出量预测[J]. 煤矿安全, 2021, 52(4): 20-24,30.
    引用本文: 张 羽, 郝富昌. 基于瓦斯解吸规律的掘进落煤瓦斯涌出量预测[J]. 煤矿安全, 2021, 52(4): 20-24,30.
    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.

    基于瓦斯解吸规律的掘进落煤瓦斯涌出量预测

    Prediction of gas emission from landing coal during driving based on gas desorption law

    • 摘要: 为了准确预测掘进落煤瓦斯涌出量,搭建了大质量瓦斯解吸实验系统,进行了不同瓦斯压力条件下瓦斯解吸实验,研究了余吾煤业3#煤瓦斯解吸规律,建立了掘进落煤瓦斯涌出量预测模型,对不同瓦斯压力在不同掘进速度的落煤瓦斯涌出量进行了预测,查明了影响掘进落煤瓦斯涌出量的主要因素。研究结果表明:余吾煤业3#煤瓦斯解吸采用对数函数公式具有较高的拟合精度,拟合参数A和B受到煤层瓦斯压力或瓦斯含量的控制,影响掘进落煤瓦斯涌出量的主要因素为煤层原始瓦斯压力或瓦斯含量、割煤速度及落煤停留时间。

       

      Abstract: 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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