低透气性煤层瓦斯抽采技术与应用

Technology and Application on Gas Drainage in Low-permeability Coal Seam

在煤矿开采中,瓦斯灾害一直是威胁煤矿安全生产的主要灾害之一。随着煤层开采深度的增加,煤层透气性随之减小,从而严重影响了煤层瓦斯的抽采率和瓦斯抽采效果。针对我国煤矿绝大部分煤层属于低透气性煤层的情况,论述和分析了低透气性煤层瓦斯抽采的各种技术原理及应用。给低透气性煤层瓦斯抽采提供技术指导,解决矿区实际问题。研究低透气性煤层瓦斯抽采具有广阔的应用前景与应用价值。

Gas disaster is always one of the main disasters to threaten the security of coal mine in the coal exploitation. With the increase in the depth of coal mining, the permeability decrease consequently, it affects the drainage rate and efficiency. The various technical principles and applications of gas drainage in the low - permeability coal seams are expounded according to the reality that most of the coal seams in China are low - permeability coal seams. The conclution can be used to provide technical guidance to the gas drainage in low-permeability coal seams and resolve practical problems in the mining area. So it has wide application prospect and using value to study gas drainage in low gas permeability coal seam.