煤矿瓦斯异常区气煤耦合自燃流场数值模拟

Tenth International Conference on Computer Modeling and Simulation (uksim 2008) Pub Date : 2017-01-20 DOI:10.1145/3036331.3036360

Weifeng Wang, Jun Deng, Y. Hou

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引用次数: 0

摘要

为了研究瓦斯异常区流动瓦斯与煤自燃区域空间分布的耦合灾害风险，建立了采空区瓦斯与煤自燃耦合模型。在室温不耗氧条件下，模拟不同放气强度、不同通风量和采空区CH4、O2浓度场。结果表明，随着瓦斯排放量的增加，瓦斯置换和煤氧消耗可以降低采空区深部氧浓度。采空区大量瓦斯的排出使煤自燃氧化带范围减小。为获取煤矿瓦斯异常区瓦斯煤自燃耦合灾害危险区的空间分布提供了理论依据。

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Numerical Simulation on flow fields for Coupling Gas and Coal Spontaneous Combustion in Gas Anomaly Area in coalmine

In order to study the coupled disaster risk of regional spatial distribution of flow gas and coal spontaneous combustion in gas abnormal area, the model of coupling goaf gas and coal spontaneous combustion was established. Under the conditions of room temperature without oxygen consumption, different intensity of gas emission, different ventilation, and the concentration field of CH4 and O2 in goaf were simulated. The results indicated that as the increase of gas emissions, gas replacement and coal-oxygen consumption can reduce the oxygen concentration in deep of goaf. The range of oxidation zone of coal spontaneous combustion is decreased by numerous amount of gas emission from goaf. It provides a theoretical basis for obtaining the spatial distribution of dangerous zone for coupling disaster of gas and coal spontaneous combustion in the gas anomaly area in coalmine.

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Tenth International Conference on Computer Modeling and Simulation (uksim 2008)

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