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煤层的瓦斯含量受到多种地质制约 ,如 :煤的变质程度、围岩透气性、地质构造、煤层的暴露程度、地下水的活动等。在以上的种种地质因素的共同作用下 ,才形成了现在各区、各煤层不均一的瓦斯含量。因此 ,从煤层变质程度及煤层纵、横向的特定环境两方面分析了马兰井田南三采区 0 2 # 煤层高瓦斯成因。
The gas content of the coal seam is subject to a variety of geological constraints, such as the degree of metamorphism of coal, the permeability of surrounding rock, geological structure, the exposure of coal seam and the activity of groundwater. Under the combined action of the above geological factors, the gas content in different districts and coal seams is not formed until now. Therefore, from the degree of metamorphism of coal seam and the specific environment of vertical and horizontal coal seam, the gas source of 0 # 2 seam in South Third Mining District of Malan Minefield was analyzed.