Jinneng Holding Group Jincheng Company Datong Coal Industry

开采深度和开采速度的增加,瓦斯动力突出灾害频发,瓦斯预测以及全矿区评判成为开采任务的重要研究方向。为进一步揭示大通矿区范围内瓦斯赋存以及突出可能性,采用采区实测数据对矿井范围内瓦斯含量以及涌出量进行预测。研究结果,4个采区的瓦斯赋存量和埋深进行拟合,3#煤层的埋藏深度与瓦斯含量拟合关系为W=0.0057H+2.1618(R2=0.88),分源预测法分别计算了回采工作面、掘进工作面和生产采区的瓦斯涌出量,井田内3#煤层瓦斯含量具有北高南低的特征,矿井最大绝对瓦斯涌出量达14m3/min,相对瓦斯涌出量约为5.6m3/t。

The increase in mining depth and mining speed led to frequent gas dynamic outburst disasters. Gas prediction and evaluation of the entire mining area become important research directions for mining tasks. In order to further reveal the gas occurrence and outburst possibility within the Datong mining area, measured data from the mining area are used to predict the gas content and emission quantity within the scope of the mine. The research results show that the gas storage capacities and burial depths of the four mining areas are fitted. The fitting relationship between the burial depth and gas content of the 3# coal seam is W=0.005 7H+2.161 8 (R2=0.88). The separate source prediction method calculates the gas emission quantities from the stoping working face, excavation working face, and production mining area, respectively. The gas content of the 3# coal seam in the mine field is characterized by high in the north and low in the south. The maximum absolute gas emission quantity from the mine reaches 14 m3/min, and the relative gas emission quantity are about 5.6 m3/t.