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- high gas drainage roadway 高抽巷
- According to the characteristics of the gas flow rule of high-technique gob in the high gas concentration coal seam,the gas drainage under section technology is safely and reasonably applied. 依据高沼气厚煤层一次采全高工艺采空区瓦斯流动特点,安全合理地采用顶板巷瓦斯抽放技术,有效地处理了工作面瓦斯超限问题,取得了安全生产双效益。
- The paper describes the determination of rational location of high-located gas drainage roadways in Laowuji Mine of Panjiang Coal & Electricity (Group)Company. 介绍了盘江煤电(集团)公司老屋基矿高位瓦斯抽放巷道合理位置确定的有关情况。
- gas drainage roadway 排瓦斯巷道
- Technology Research of Gas Drainage Under Suction in High Suction Road Way at Combined Mining Caving Coal Face of High Gas in "Three Soft"Thick Seam "三软"厚煤层高瓦斯综放面高抽巷瓦斯抽放技术研究
- high gas drainage method 高抽法
- high gas drainage way 高抽巷
- On the basis of industry test,this paper analyses mining feasibility of applying roadway caving method and caving broken mechanism in high gas steeply indined medium coal seams. 在工业性试验的基础上,分析了在高瓦斯急倾斜中厚煤层中应用巷道放顶煤法开采的可行性和顶煤的破碎机理。
- Reasonable Arrangement of Gas Drainage Roadways in Roof of Short-interval Coal Seam Group 近距离煤层群底板瓦斯抽放巷合理布置探讨
- Test result clears,roadway caving method possesses adventages of simple technology,high efficiency and safety,it finds out a good method for mining high gas steeply indined middle coal seams. 试验结果表明,巷道放顶煤采煤法具有工艺简单、效率高、安全性好等优点,为高瓦斯急倾斜煤层找到了一种有效的开采方法。
- 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。
- Pneumatic conveying requires comparatively high gas velocities. 气力输送需要比较高的气体速度。
- Gas drainage in high gassy coal seam with low gas permeability is always an hard solved significant technology problem in the process of safety production. 高瓦斯低透性煤层的瓦斯抽放,一直是煤矿安全生产过程中的重大技术难题。
- It proved that gas drainage with high position bores and elevation bores can both reduce laneway digging work and get fairly good gas extracting result. 实践表明高位抽放与仰角抽放方法相结合,既可减少钻场施工,又有较好的抽放效果。
- Well, what the high gas prices have to do with a bottle of tequila? 高涨的油价和一瓶龙舌兰酒究竟有什么关系呢?
- Transforming Mine Gas Drainage System and Raising Gas Drainage Rate? 粉尘作业人员的饮食要注意什么?
- At high gas velocities the circulation of solids becomes appreciable. 在高气速时,固体颗粒循环变得显著了。
- The reasonable layer selection is the main influencing factors for gas drainage by high level borehole,the borehole parameters is based on the caving & fracture zone height of gob. 高位钻孔抽放最主要的影响因素是合理层位选择,其钻孔参数应根据采空区冒落带及裂隙带高度来设计。
- One of the major problems is that the designed gas drainage schemes have no scientific theon basis. 但是瓦斯抽放方案设计没有科学的理论依据是目前存在的主要问题之一。
- A kind of hydraulics system for CKS-I hydraulic gas drainage drilling rig was designed. 介绍了一种自主设计的CKS-I型全液压瓦斯抽排放钻机的液压系统。