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瓦斯抽采是防治煤矿瓦斯灾害的根本措施,也是开发煤层气资源的重要手段,其中,顺层钻孔是煤矿抽采瓦斯的一种重要布孔方式。研究表明,定点定长布囊带压封孔新技术有助于增加封孔的气密性,增加钻孔瓦斯浓度,降低封孔成本,扩大瓦斯抽采能力,提高瓦斯抽采率,缩短抽采达标时间。
Gas drainage is the fundamental measure to prevent and treat gas disasters in coal mines. It is also an important means of exploiting coalbed methane resources. Among them, drilling in the layers is an important way for gas drainage in coal mines. The research shows that the fixed-point fixed-length cloth bag sealing with pressure sealing technology will help to increase the airtightness of sealing, increase the gas concentration in drilling, reduce the sealing cost, expand the gas drainage capacity, increase the gas extraction rate and shorten the pumping Acquisition of standard time.