瓦斯抽放在低瓦斯矿井瓦斯防治中的应用

为了解决高产高效工作面多瓦斯涌出源、瓦斯涌出量大的问题，结合矿井的地质开采条件，提出了实施综合瓦斯抽放方法，即开采煤层瓦斯采前预抽、卸压邻近层瓦斯边采边抽、本煤层抽放瓦斯、采空区瓦斯抽放等多种方法在一个工作面的综合应用。此方法在空间和时间上为瓦斯抽放创造更多的有利条件，将钻孔抽放与巷道抽放结合起来，大幅度提高了瓦斯抽放率，从而降低瓦斯抽放成本，保证了矿井安全生产。

The Application of Gas Drainage for Preventing Accident in Low Gas Mines

Along with mechanical mining , comprehensive mechanized coal mining method application and the development of the technology of coal mining, excavate speed unceasing accelerate , mining strength increase, so make working face absolute methane accumulation increase substantially, to solve the efficiently face much gas of high yield ,Comprehensive gas drainage method must be applied in considering the geological field condition. That is to drainage before mining,form near layer coal seam unload gas press,form gob,form coal seam itself. This method take out most advantage for gas drainage on space and time, fall together drill drainage and laneway drainage in the aspect of technology and fashion, raise gas suction rate, so reduce gas drainage cost, ensure mining safety produce.