瓦斯抽采是矿井瓦斯治理的主要手段,但是,在瓦斯抽采过程中,往往出现瓦斯抽采浓度低,抽采效果差,预抽时间长等问题。瓦斯抽采效果受到多种因素的影响,其中抽采钻孔的封孔工艺和封孔质量是关键。目前,国内外瓦斯抽采钻孔封孔技术主要有黄泥封孔、聚氨酯封孔、树脂锚固剂封孔、胶囊封孔器封孔、注浆封孔等。这些封孔技术在现场应用中取得了较好的效果,但也存在一些问题。如黄泥浆封孔的作业时间长,劳动强 Gas drainage is the main method of mine gas management. However, in the process of gas drainage, gas extraction concentration is often low, pumping efficiency is poor, pre-pumping a long time and other issues. The gas drainage effect is affected by many factors, of which drilling and sealing the drainage hole sealing technology and sealing quality is the key. At present, the domestic and international gas drainage drilling drilling technology mainly yellow mud sealing, polyurethane sealing, resin anchor sealing, sealing sealing capsule, grouting sealing. These sealing technology has achieved good results in the field application, but there are also some problems. Such as yellow mud sealing work long hours, labor-intensive