pre-drainage

pre-drainage

美 　英

• 网络预疏放水

例句

In this study, a new horizontal pre-drainage system is suggested.

据此，提出了新水平预排水系统。

Among various ways of coal-bed gas drainage, pre-drainage from surface boreholes has the highest utilization value in industry.

煤层气抽排方式中，地面钻孔预抽排最有工业利用价值。

Investigation and Application of Gas Pre- drainage Technique along Regional Bedding Strip in Coal Seams with Low Gas Permeability

区域顺层条带预抽瓦斯防突技术在低透气煤层中的考察应用

Controlled blasting technique to improve gas pre-drainage effect in a coal mine

提高煤矿瓦斯抽放效果的控制爆破技术

Using Gas Desorption Index to Determining Gas Pre-drainage Rate of Outburst Seam

利用瓦斯解吸指标确定突出煤层瓦斯预抽有效抽放率

Mine gas pre- drainage through underground horizontal boreholes

利用多边横向钻孔进行矿井瓦斯抽放研究

Test of Improving Gas Pre- drainage Effect from Cross- seam Holes by Hole Enlargement with Water Jet

高压水射流扩孔提高穿层钻孔预抽效果的试验

Preliminary Application of Gas Pre-drainage from Coal Seam by Long Holes in Heading Face to Prevent Coal and Gas Outburst

掘进工作面应用长钻孔预抽煤层瓦斯防止煤与瓦斯突出的效果

Probing into Regional Gas Pre-drainage by Long Holes along Coal Seam

利用顺煤层长钻孔工艺实行区域性预抽瓦斯的探索

Teat on Rational Bore-hole Parameters of Gas Pre-drainage by Holes along Seam in Chengzhuang Mine

成庄矿顺层钻孔预抽煤层瓦斯的合理钻孔参数试验

Study and analysis on gas pre-drainage results of coal mining face

工作面瓦斯预抽效果考察与分析