矿井煤与瓦斯突出数学模型的建立

A COAL AND GAS OUTBURST MODEL FOR MINES

为研究煤与瓦斯突出的特点及危害,同时为进一步研究其诱发瓦斯爆炸继发性灾害发生规律提供基础,运用气体动力学和瓦斯在煤层中流动的基本理论,建立了煤与瓦斯突出的数学模型。同时,为考察模型的准确性,在不同工况下,将模拟计算结果与文献中的实验室实验数据进行了对比。结果表明:模型计算与实验结果符合良好,可预报煤与瓦斯突出整个发生、发展和衰减过程中的突出压力及瓦斯量等参数变化趋势。

To fully understand the characteristics and the hazardous effects of coal and gas outbursts and to further investigate its influences on the secondary catastrophes, a coal and gas outburst model has been developed based on the fundamental theory of compressible flow dynamics and gas flow dynamics in porous media. Meanwhile, the calculation results of different cases have been compared with the experimental data to validate the model. The results show that the calculation results have a quite good coincidence with the experimental results and the model is quite accurate. The model can simulate and describe the whole coal and gas outburst process including its happening, developing and decaying phases and can be used in mines.