4) high drill holes extracting
高位钻孔抽采
5) downward drilling to extract
下向抽采钻孔
1.
The research shows that through constructing downward drilling to extract in floor suction roadway by properly using various exiting resource and technique the gas controlling problem of no high level suction roadway caused by unpunctual drivage of mining face is settled,indicates that temporal benefit and economic benefit are obtained,gas comprehensive controlling.
为解决因采掘接替而引起的工作面瓦斯综合治理中的断缺,大胆采用钻孔法替代巷道法瓦斯治理技术,妥善利用现有资源和技术条件,在底抽巷中施工下向抽采钻孔,解决了因工作面高抽巷掘进不能按期到位而带来的无高抽巷段瓦斯治理难题,并在时间和经济上取得了良好效益,完善了采煤工作面瓦斯综合治理措施,确保了工作面按期、安全、高效回采。
6) surface borehole
地面钻孔
1.
Such measures like reducing air-leak in goaf,disposing hole near to return airway,controlling extracting pressure to range from 40 to 60 kPa and space between holes 200 to 300 m and so on are useful to promote the efficiency of surface borehole.
通过对比研究淮南矿业集团各矿区试验钻孔抽采数据,在明确地面钻孔抽采瓦斯机理的基础上,运用理论分析及数值模拟的手段,分析总结了地面钻孔抽采采空区瓦斯效率的影响因素,并针对具体影响因素提出了提高钻孔抽采效率的相关建议。
补充资料：抽抽趔趔
1.犹言别别扭扭。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条