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做为向煤层和煤层断面穿孔的通过原始煤层的瓦斯抽放孔中的沼气移动规律的实验的理论调查基础是:1、把时间和空间(沿走向方向)均考虑在影响瓦斯抽放区的透气性变化之内,指出了决定煤层透气性的新方法;
The theoretical investigation of the experiment on the law of biogas movement through the gas drainage holes of the original coal seam perforated to the coal seam and coal seam sections is as follows: 1. Considering the time and space (along the strike direction) in the influence of the gas drainage area Within the change of permeability, pointed out a new method to determine the permeability of coal seam;