1.
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
2.
The Optimized Study of Gas Taking out Parameters of High Position Boring of Taoyuan
桃园矿高位钻孔瓦斯抽放参数优化研究
3.
Integrative Applications of High Level Boreholes for Gas Drainage and Fire Prevention and Extinguishing in Goaf
采空区高位钻孔瓦斯抽放与防灭火的一体化应用
4.
Design for drawing out gas with high position boring at coal face
轻放工作面抽放瓦斯高位钻孔的设计
5.
Application of Gas Drainage Technology by High-level Boreholes in Gas Control of the Working Face
高位钻孔抽放技术在工作面瓦斯治理中的应用
6.
Applying Technology of High Drilling Drainage to Preventing Gas Accumulation at Upper Corner of Full-mechanized Mining Face
利用高位钻孔抽放技术治理综采工作面上隅角瓦斯积聚
7.
The Technique for the Drainage of the Gas from the Upper Corners of A Gassy Fully-mechanized Top-coal Caving Face through Drilling Vertical Holes
高瓦斯综放工作面上隅角竖直钻孔瓦斯抽放技术
8.
Research on the technology of integrated interchange drilling to drainage gas
综合立体交叉钻孔抽放瓦斯技术研究
9.
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
10.
Research on Bit for Efficient Drilling of Gas Drainage Borehole in Nantong Mining Area;
南桐矿区瓦斯抽放孔快速钻进钻头的研究
11.
A Study of the Second Hole Sealing Method to Improve Gas Drainage in Coal Seams
煤层瓦斯抽放钻孔的二次封孔方法研究
12.
Pressure releasing and gas drainage with long bore hole in roof overburden of fully mechanized caving face
综放面顶板覆岩走向长钻孔卸压抽放瓦斯研究
13.
Research on Accumulation Gas Control Measure in Drilling Field Using Gas Drainage at High Gas Mine
高瓦斯矿井抽放钻场瓦斯积聚治理方法研究
14.
Gas drainage in seam with large auto variable diameter bore holes
自动变径大直径钻孔抽放煤层瓦斯试验
15.
Gas Drainage by Boring Near Seam at 43001 Coal Face
43001采煤工作面上邻近层穿层钻孔瓦斯抽放
16.
Application of Technology of High Gas Cannon Picking Roof Perforate Gas Administer
高瓦斯炮放面顶板钻孔法瓦斯治理技术应用
17.
Application of Gas Drainage from Long Holes Along Roof Strike in the Working Face Upper Corner
走向长钻孔瓦斯抽放在治理工作面上隅角瓦斯中的应用
18.
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