高瓦斯特厚煤层综放开采工作面瓦斯涌出及分布特征研究

Research on Gas Emission and Distribution Characteristics of Fully Mechanized Coal Face in High Methane and Thick Seam

针对胡家河煤矿401102高瓦斯特厚综放开采工作面的实际条件,采用三维网格测点布置方法,对该工作面瓦斯浓度三维分布进行测定,绘出工作面瓦斯浓度分布等值线图、沿工作面倾向及走向的瓦斯浓度曲线图,得到沿风流方向的瓦斯浓度最低点浓度曲线,并对瓦斯浓度最低点分布函数进行定积分,得到工作面瓦斯涌出分量比例。

The three-dimensional distribution of gas concentration measurement at the working face is measured by using the method of three-dimensional grid based on the conditions of the fully mechanized coal face named 401102 in Hujiahe high methane and thick seam.Draws the gas concentration leaning to the face and trending to the face research demonstrates that the gas concentration leaning to the face increases,but it occurs the biggest point near the working face at the bottom of high drainage way because the drainage negative pressure of high drainage way leads to accumulating methane,along the wind flowing,the lowest area of the gas concentration leaning to working face waves from gob to the wall.Also analyzes the working face gas emission law relationship with the production and operation.