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- high gas drainage way 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。
- 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 roadway 高抽巷
- 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。
- Pneumatic conveying requires comparatively high gas velocities. 气力输送需要比较高的气体速度。
- 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。
- Transforming Mine Gas Drainage System and Raising Gas Drainage Rate? 粉尘作业人员的饮食要注意什么?
- 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?
- 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。
- The practice of gas measuring and gas drainage when shaft developed through gasy seams in Hudi mine is introduced. 介绍了胡底煤矿在竖井开凿遭遇高瓦斯煤层时,进行瓦斯测定和瓦斯抽排的工程实践。
- In order to obtain a good result of gas drainage in gob roof, the control methods of gas from goaf are discussed. 摘要为了在采空区顶板实施瓦斯抽放技术获得较高的瓦斯抽放效果,对采空区瓦斯治理方法进行了探讨。
- However, in areas with weaker hydrodynamics, or stagnant area, the coal usually has high gas content. 相反,在水动力不活跃地区或滞流水区域,煤层气的含量就比较高。
- HDPE with fire retardance and antistatic property has been developed and used to make gas drainage pipe in the coalseams. 研制了具有阻燃及抗静电性能的HDPE,并将其用于制作煤层瓦斯抽放管。
- Direct expose to flame and high gas veloc-ity and high resistance to erosion-abtasion. 可直接接触火焰,耐高速气流冲刷,抗风蚀能力强;
- Research result shows that controlling blasting technique is feasible to improve gas drainage under suction in hardness and low dialyzing coal bed. 研究表明,该技术用于坚硬低透气煤层,提高矿井瓦斯抽放率是可行的。