摘要
根据煤层钻孔周围应力分布规律,探讨了煤层钻孔封孔装备和封孔材料性能,采用穿层钻孔方法测定210816工作面原始瓦斯压力。在实验室条件下,测定出其采面煤样的工业组分,结合现场测得瓦斯压力,得出煤的游离瓦斯含量和吸附瓦斯量,结果表明瓦斯压力越大,其含量越高。
Based on the stress distribution rule around the drilling in coal seam,the hole- sealing equipments and hole-sealing materials of coal seam drillings were discussed. The primitive gas pressure of No. 2 10816 working face was measured by layer- through borehole method. The industrial components of coal samples were measured in laboratory. Then the free gas content and adsorption gas content were gained. The results show that the higher gas pressure and the higher gas content
出处
《陕西煤炭》
2016年第1期11-13,共3页
Shaanxi Coal
关键词
瓦斯压力
瓦斯含量
封孔工艺
吸附常数
gas pressure
gas content
hole-sealing technology
adsorption constant.
