底板穿层钻孔瓦斯抽采技术优化
Optimisation of Gas Extraction Technology for Bottom Plate Penetration Drilling
李蕾1
作者信息
- 1. 中煤科工集团重庆研究院有限公司,重庆 400037
- 折叠
摘要
为提高 3#煤层瓦斯抽采效率,优化底抽巷内穿层钻孔瓦斯抽采技术,具体通过注浆、优化封孔提升钻孔密封效果,优化排渣减少钻孔钻进期间瓦斯动力显现,使用常压水扩孔并合理调控抽采管网提升瓦斯抽采效果.工程应用后,3301 回风巷底抽巷穿层钻孔瓦斯抽采效率得以显著提高,为巷道掘进及后续采面回采创造了良好条件.
Abstract
In order to improve the efficiency of gas extraction in coal seam 3#,optimize the gas extraction technology of cross layer drilling in the bottom drainage roadway,specifically improve the sealing effect of drilling through grouting and optimized hole sealing,optimize slag discharge to reduce gas dynamic manifestation during drilling,use atmospheric water to expand the hole and reasonably regulate the extraction pipeline network to improve the gas extraction effect.After engineering application,the gas extraction efficiency of the 3301 return airway bottom drainage roadway through layer drilling has been significantly improved,creating good conditions for tunnel excavation and subsequent mining face recovery.
关键词
底抽巷/穿层钻孔/突出煤层/瓦斯抽采Key words
bottom extraction roadway/through-hole drilling/prominent coal seam/gas extraction引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据