摘要
正珠矿通过使用新型"堵-注-排"封孔工艺,解决了钻孔封孔质量差、填充材料不能充填封堵段围岩裂隙、单孔浓度偏低的问题,提高了瓦斯抽采钻孔单孔抽采浓度、抽采负压,并保持了长时间的稳定抽采效果,为回采工作面正常回采提供瓦斯治理保障,值得推广应用。
The problems of borehole sealing of stuff material unable to fill the surrounding rock and the low concentration for single borehole were solved by using the new blocking-injection-drainage sealing method. Drainage concentration in single borehole and negative pressure increased,and maintained stable,the practice guaranteed mining face safety. It is worth for promotion.
出处
《山西焦煤科技》
2018年第6期31-33,共3页
Shanxi Coking Coal Science & Technology
关键词
瓦斯抽采
“堵-注-排”封孔工艺
抽采效果
Gas drainage
Sealing process of block - injection - discharge
Drainage ettect
