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针对汝箕沟煤矿3229下分层综采工作面的通风条件,采用中央平面网格状的测点布置,对该工作面割煤前后瓦斯浓度二维分布进行了测定,得出了瓦斯分布等值线图,采用函数求极值点的方法,得出了工作面沿倾向瓦斯浓度最低点分布曲线,提出了基于瓦斯浓度最低点分布函数的瓦斯涌出分量比例计算方法,得出了该工作面割煤前后煤壁与采空区瓦斯涌出的比例,为制定采煤工作面的瓦斯治理措施及其效果检验提供了依据。
Aiming at the ventilation condition of 3229 lower stratified mining working face in Rujigou coal mine, the two-dimensional distribution of gas concentration before and after cutting coal is determined by measuring point arrangement of central planar grid. The gas distribution and so on The value of the line, using the function to find the extreme point of the method, the working face along the trend of the lowest point of gas concentration distribution curve, the gas concentration based on the lowest point distribution function of gas emission component ratio calculation method, the work was drawn The ratio of gas emission from the coal wall to the mined area before and after cutting coal face provides the basis for the development of gas control measure and its effect in coal mining face.