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- 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。
- Gas drainage with high level borehole in roof applied to gas control 顶板高位钻孔抽放在瓦斯治理中的应用
- Application and research on high level gas drainage technology in single poor penetration thick seam 单一弱透气性厚煤层高位抽放技术的应用研究
- 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
- 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
- High-level holes gas drainage 高位孔瓦斯抽放
- Bilge water separator drainage tank high level alarm. 舱底水油分离器泄放柜高位报警。
- long hole gas drainage 电向长钻孔抽放
- Our effort is gear to a higher level of production. 我们调整力量将生产推向更高的水平。
- China has a high level of civilization. 中国有高度的文明。
- An exam demands a high level of concentration. 考试时需要全神贯注。
- We need someone with a high level of arithmetic. 我们需要一个精通算术的人。
- It is rare to watch such a high level game. 这么高水平的比赛还真不多见。
- They were determined to press their case at the highest level. 他们决定把他们那事向最高层反映。
- 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。
- High Level of Communication Skills. 具有较强的沟通和协调能力。
- Transforming Mine Gas Drainage System and Raising Gas Drainage Rate? 粉尘作业人员的饮食要注意什么?
- High-press F.O. Pipe drain tank high level alarm. 高压燃油管泄漏油箱高位报警。
- These workers enjoy a high level of job security. 这些工人享有很高的工作安全度。
- 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。
