综采工作面瓦斯涌出量数学预测模型建立及实测应用

Abstract

Abstract: In order to realize accurate prediction of gas emission rate in fully mechanized coal face of closed distance coal seam group, in order to constitutive equation of coal gas emission as the theoretical basis, the calculation model of gas emission rate of coal wall , the calculation model of gas emission rate of fallen coal, the calculation model of gas emission rate of remaining coal in gob and the calculation model of gas emission rate of the adjacent coal seams were established, combining with characteristic factors of gas emission source in fully mechanized coaf face. By the prediction model gas emission rate of 9209 and 14205 fully mechanized coal face in Shangshe coal mine and Shaqu coal mine was calculated, and the predicted value and the measured value of statistical error were 2.60% and 4.92%,on this basis, By the prediction model gas emission rates of 9209 and 14205 fully mechanized coal face in different Annual output of coal were predicted. The research shows that gas emission rate of 9209 and 14205 fully mechanized coal face increased linearly with the increase of annual output of coal, and gas emission rate of the adjacent coal seams is the most significant, and the prediction model has a certain practical value in predicting gas emission rate of fully mechanized coal face.

CLC Number:

TD712

References

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Establishment and application of mathematical prediction model of gas emission rate in fully mechanized coal face

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