高产高效矿井煤层瓦斯抽采工艺优化

瓦斯灾害因成灾类型多,瓦斯矿井分布广,灾害事故影响大,已成为我国多数煤矿常见自然灾害之首。当前瓦斯治理较为广泛的方法是运用瓦斯抽采技术,降低煤层残余瓦斯含量,而采用何种抽采工艺既能高效的消除瓦斯灾害威胁,又能保证良好的效益是需要权衡的关键问题。以我国高产高效工作面为试验区,通过开展多种瓦斯抽采工艺的对比试验,揭示了各类抽采钻孔在不同抽采孔径、不同间距、不同布置类型等工艺条件下的抽采参数特征,进而得出符合矿井实际的最优工艺类型及最优参数,为矿井的高效抽采提供重要依据。

Optimization of Coal Seam Gas Drainage Technology in High Yield and High Efficiency Mines

Since the gas disasters have diversified causes,while gassy mines are widely distributed and more influential,thus become the first common natural disaster in most coalmines in China.More extensive approach to govern gas disaster at present is the gas drainage technology to lower down coal seam residual gas content.What kind of drainage technology can efficiently eliminate gas disaster threatening and ensure good benefits is the key issue should be weighed.Taking a high yield and high efficiency working face as an experiment area,through multiple gas drainage technologies comparative test has revealed drainage parametric features of various typed drainage boreholes under different diameters,intervals between them and layout types.And then have worked out optimal technological type and optimal parameters in accordance with mine practices,provided important basis for mine high efficiency gas drainage.