郑州矿区“三软”不稳定厚煤层瓦斯抽放技术

Gas drainage technology for "three soft" instable thick coal seam in Zhengzhou mining area

介绍了郑州矿区在“三软”不稳定厚煤层中采用煤位高抽巷、顶板岩石钻孔抽放、上隅角埋管抽放等几种瓦斯抽放技术 。

This article introduces several gas drainage technologies for 'three soft' instable thick coal seam in Zhengzhou mining area. The paper then points out the existing problems and development direction of the technologies.