保护层开采与卸压瓦斯强化抽放技术研究

Study on Gas Drainage Technology of Protective Layer Mining and Pressure Relief

针对当前煤与瓦斯突出事故严重危害着我国煤矿安全生产的现状,对保护层开采技术作为优先采用的区域性防止突出措施的研究具有了较大的现实意义。采用理论分析与现场实践相结合的方法,根据谢一矿5121B9b工作面开采过程,提出了一整套卸压瓦斯强化抽放的技术方法。实践证明此方法明显提高了煤层的瓦斯抽采率,降低了煤与瓦斯的突出危险性,使其具备了安全高效开采的条件。

In view of the current coal and gas outburst accident seriously endanger the status quo of coal mine safety production in China, the protective layer mining technology as a priority to the regional prevention measures to study has a great practical significance. Based on the combination of theoretical analysis and field practice, according to the mining process of 5121 B9 b working face in Xieyi mine, a set of technical methods of gas drainage and gas drainage is put forward. Practice has proved that this method has significantly improved the gas extraction rate of coal seam, reducing the outstanding risk of coal and gas, so that it has a safe and efficient mining conditions.