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为了加强对偏W形通风系统瓦斯浓度场分布规律的研究,以太岳煤矿2201综采面为例,采用数值模拟与现场实测相结合的方法进行研究,从理论和实践两方面得出综采面分别采用2种不同的通风方式时瓦斯浓度场分布情况。通过对比分析得到,两进一回偏W形通风方式更有利于瓦斯集中抽放及预防回风隅角瓦斯超限。
In order to strengthen the research on the distribution law of gas concentration field in partial W-shaped ventilation system, taking 2201 fully mechanized coal mining face of Taiyue Coal Mine as an example, the method of combining numerical simulation and on-site measurement is used to study. The comprehensive mining face The distribution of gas concentration field when using two different ventilation modes respectively. Through comparative analysis, it can be concluded that the bi-directional biased W-shaped ventilation mode is more conducive to the gas drainage and the prevention of methane overpressure at the return air corner.