中文摘要：

为了探究抽采钻孔漏气机理,对钻孔周围力学模型进行分析,建立钻孔漏气量模型,通过算例分析钻孔漏气量影响因素,在此基础上,提出囊袋式注浆封孔工艺进行工程实践,并取得了良好的抽采效果。

英文摘要：

In order to research the leakage mechanism of borehole, the leakage model of borehole is built on the base of mechanical model of the coal around the horehole which has been analyzed. Then the influence factors is researched by the computational example. By this way, puts forward the method of capsule bag grouting method, which has gained a good effect of gas extraction in practice.