井下负压抽采新型封孔技术的研究与应用

Research and application of new sealing technology for underground negative pressure drainage

对新型井下负压抽采封孔工艺进行了详细的分析以及对注浆材料的性能进行了测试,并通过FLAC2D数值模拟确定了理论的封孔长度,在N2202工作面进行了现场试验,验证了该技术的可行性。为高瓦斯矿井实现瓦斯高效抽采和解决矿井瓦斯隐患提出了很好的解决方式。

A new type of underground negative pressure drainage sealing hole process is analyzed in detail and the performance of grouting material is tested, and the length of sealing hole is determined by FLAC2D numerical simulation. The feasibility of the technique is verified by field test in N2202 working face. It is a very good solution for the high gas coal mine to realize and solve the problems of the coal mine gas.