1.
The new measuring method for distance of the gas drainage hole and seam permeability
瓦斯抽采孔孔距及煤层透气性的测定方法
2.
Study on Rational Borehole Space of Crossed Boreholes for Gas Pre-drainage
预抽煤层瓦斯交叉钻孔合理孔间距的研究
3.
Gas Drainage Technology of Goaf with Boreholes from Surface Ground of Tangshan Mine
唐山矿地面钻孔抽放采空区瓦斯技术
4.
Technology of 1000 meter directional borehole at large diameter for mine gas extraction
顶板大直径千米长钻孔抽采瓦斯技术
5.
Research on Maximize Technology of Extraction Mining with Drilling Through Coal Seam in Protective Coal Seam
保护层开采穿层钻孔抽采最大化技术研究
6.
Influencing factors to extraction efficiency of surface goaf hole
地面钻孔抽采采空区瓦斯效率影响因素
7.
Application of Large-diameter Borehole in the Process of Gas Comprehensive Management in Coal Face
大直径抽采钻孔在采面瓦斯综合治理中的应用
8.
Research on Parameters of Gas Drilling Bore in Steep Coal Seam Gob
急倾斜煤层采空区瓦斯抽采钻孔参数研究
9.
Test of Large Hole Distance and Small Resistant Line Blasting Technique in Underground Stope
大孔距小抵抗线爆破技术在地下中深孔采场中的试验
10.
Study on Technology of Surface Drillings Draining Pressure Relief Gas of Coal Seam by Protected;
地面钻孔抽采被保护层卸压瓦斯技术研究
11.
In-seam Deep Borehole Drilling Technique in Soft and Outburst Thin Seam
松软突出薄煤层本层深孔抽采瓦斯施工工艺
12.
Application and analysis on high level borehole gas drainage technology in mined-out area
采空区高位钻孔瓦斯抽放技术应用与分析
13.
Construction Technology and Equipment for Gas Drainage Borehole Drilling in Underground Coal Mine
煤矿井下瓦斯抽采钻孔施工技术与装备
14.
Application of Recoverable Gas Drainage Borehole Sealing Tubing Technology to Hecun Coal Mine
可回收瓦斯抽采封孔管技术在何村煤矿的应用
15.
Application of Gas Extraction Technology by High-level Fracture Borehole in Fully Mechanized Caving Face of Thick Coal Seam
高位裂隙钻孔抽采技术在厚煤层综放面的应用
16.
Effect Forecast for Methane Drainage with Parallel Drilling along Coal Seam
顺煤层平行钻孔瓦斯抽采效果预测方法
17.
Gas drainage technique by 1000 m long and large diameter roof boreholes in high gas coal seam group
高瓦斯煤层群顶板大直径千米钻孔抽采技术
18.
Study on technique application of eliminating outburst by extracting gas from shallow hole in the fully mechanized mining face
综采工作面浅孔瓦斯抽放消突技术应用研究