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- coal mining while gas drainage 边采边抽
- The partial ventilator in the coal mine is an important equipment in mine digging,its dependability and efficiency affect directly the safety of gas drainage. 局部通风机是煤矿井下掘进过程的重要设备,其使用的可靠性和效能直接影响着瓦斯的安全排放。
- Gas drainage from roadway in roof rock is used in Yangquan Coal Mining Administration and comprehensive gas drainage based on gas source is used in Songzao Coal Mining Administration. 阳泉局采用顶板岩巷抽放法,松藻局采用针对瓦斯源的综合抽放方法。
- The application of the gas drainage technology in Donghai coal mine is introduced, including gas drainage in close coal layer, gas drainage in goaf, gas drainage from coal, and local gas drainage. 介绍瓦斯抽放在东海矿的应用,抽放方式为邻近层抽放、空区抽放、本煤层抽放及局部抽放。
- The latest progress in the directional drilling system and its various applications including in-seam methane drainage, gob gas drainage, coal mine methane commercial recovery, etc. are presented. 本文介绍了定向钻进系统的最新进展,以及它在许多方面的应用,其中包括煤层内瓦斯抽放,采空区瓦斯抽放,煤层气商业回收等。
- Gas Drainage of undischarged pressure hole at original coal seam is an indispensable link in coal mine production.The result of releasing gas depends on natural ventilated coefficient. 本煤层未卸压钻孔抽放,是煤矿生产系统中不可缺少的环节,由于煤层的天然透气系数不同,抽排瓦斯的效果也不同。
- coal mining operation after gas drainage operation 先抽后采
- Way to Improve Gas Drainage Effect in Huaibei Coal Mining Area 淮北矿区提高瓦斯抽放效果的方法和途径
- Application of gas drainage technique in Xing'an coal mine 瓦斯抽放技术在兴安煤矿的应用
- Founded and Used of Ground Gas Drainage of Chaohua Coal Mine 超化煤矿地面瓦斯抽放系统创建与使用
- 50 Years'Development of Coal Mine Gas Drainage Technology 煤矿瓦斯抽放技术发展的50年
- Status and Development Trends of Gas Drainage in Coal Mine of China 我国煤矿抽放瓦斯现状及发展前景
- Application of High-level Gas Drainage Technolgy in Xin'an Coal Mine 高位钻孔抽放瓦斯技术在新安煤矿的应用
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- I fell in upon an old acquaintance of mine while on holiday in Switzerland. 我在瑞士度假时巧遇一位老熟人。
- Application of high level gas drainage gateway to high gassy fully mechanized coal mining face 高位瓦斯排放巷在高瓦斯综采工作面的应用
- Using Gas Drainage Technology of Waste Pipe Laying to Dispose Gas for Return Air Corner in Coal Mining Face 采面回风隅角埋管抽放治理瓦斯
- Gas drainage technology with short boreholes in stress reduced area of coal mining face with potential outburst danger 突出危险工作面应力降低区浅孔瓦斯抽放技术
- Rear High Level Gas Drainage Gateway Applied to Control Gas from Initial Coal Mining of Fully Mechanized Mining Face 利用后部高抽放巷治理综放工作面初采期瓦斯