1) borehole location
钻孔位置
1.
15100 extraction face of Huangyanhui minefield,Shanxi Province as example,introduced a basic method to determine borehole location through angle of caving zone,angle of water conducted fracture and water conducted zone computation.
以山西省黄岩汇井田15100采掘工作面所施工的两个"三带"观测孔为例,介绍了通过冒落带角、导水裂缝角和导水裂缝带的计算来确定钻孔位置的基本方法。
2) bore-hole position survey
钻孔位置测量
3) Drilling apparatus
钻孔装置
4) layout of drill hole
钻孔布置
1.
The layout of drill hole and the determination of parameter in advanced water injection to prevent rockburst from occurring;
预防冲击地压煤层掘进注水钻孔布置与参数的确定
5) high level borehole
高位钻孔
1.
Theory and practices on high level borehole gas drainage technology;
高位钻孔瓦斯抽放技术理论与实践
2.
Gas drainage with high level borehole in roof applied to gas control;
顶板高位钻孔抽放在瓦斯治理中的应用
3.
Application of gas drainage technology with high level boreholes in Zhuzhuang Mine;
朱庄煤矿高位钻孔瓦斯抽放技术的应用
补充资料：封口装置——滚纹装置
封口装置——滚纹装置     | ||
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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