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- the coal seam gateway 过煤层巷道
- In view of the problems occurring in trapezoidal support used in coal seam gateway, a novel small-curvature arch support for mining engineering is presented. 针对煤层顺槽梯形支架存在的问题,提出一种新型结构的小曲率拱型支架。
- The crack in the coal seam is divided into two kinds:endogenic crack and exogenous crack. 煤层中的裂隙分两种,即外生裂隙和内生裂隙。
- The example of the large dip angle and the coal seam group is the Yuexu area in Tangshan Mining Filiale. 大倾角、煤层群采煤设计以开滦唐山矿业分公司重点衔接区域岳胥区-680水平采区为设计对象。
- Introduced the geologic background of the Coal-Ge, and the distribution of Germanium in the coal seam. 摘要介绍了胜利煤-锗矿床的地质背景,以及锗在矿层的分布情况。
- But if so, the effect of injection meets uncertainly the requirement of the project in pace with advancement of the coal seam project and changing of the geological factors. 但是,随着煤层注水工程的推进,地质因素不断变化,若仍采用该方法确定的工艺参数注水,其效果不一定满足注水工程的要求。
- If undertaking improvement on unsubstantial technical sectors,it is expected a breakthrough in exploration of the coal seam gas in the Liupanshui area. 指出针对薄弱技术环节进行改进,六盘水地区煤层气勘探可望取得突破。
- This study provides a scientific method about studying the gas content of the coal seam unmined and provides the basic data about the safe mining. 这为未开采煤层瓦斯含量的研究提供了科学方法,并为该煤矿的安全开采提供了基础资料。
- The coal seam in Daming No.1 &No.2 Mines, Tiefa Mining Administration is overlain by a rich water bearing Quaternary sand layer. 铁法矿务局大明一、二矿的煤层上覆为含水丰富的第四系砂层。
- ZHANG Tin-song.The effect and its application of the coal seam affusion improved by lubricant[J].Journal of mechanics and practice,1999,45(5):15-18. [5]张廷松.;湿润剂提高煤层注水效果及其应用[J]
- Based on analysis of sedimentary facies of coal measures in Tiefa mining area, the erosion zones in the coal seam No.4 in Dalong mining area ar... 在对铁法矿区煤系沉积相分析的基础上,利用煤层顶板砂体等厚图对大隆井田4%23煤层中的冲刷带进行了预测;揭示了铁法矿区煤层冲刷带的总体分布规律。
- The main key stratum that is made up of the hard stratum covering over the coal seam has a great influence on rock burst. 摘要煤层上覆坚硬厚层岩层组成的主关键层对冲击矿压的发生具有强烈的影响。
- The coefficient of water-invasion is usually used as judgment criterion when the coal seam suffered from Ordovician limestone water invasion. 开采受奥灰水威胁的煤层时,通常都把突水系数作为安全评价的依据,此方法存在一定局限性。
- I add the coal on the flame continuously. 我不断朝火里添加煤炭。
- The coal seam tunnel of compound mudstone roof of large span is the tunnel that is violent out of shape,roof is easy falling and safeguard is very difficult. 大跨度复合泥岩顶板煤层巷道是围岩变形剧烈且顶板易冒落、极难维护的巷道。
- Briefly expounds the adopting measures and concrete ways of controlling H2S gas in mining 9#coal seam,provides the referential experience for controlling H2S gas in the coal mine. 简述了在开采9%23煤过程中治理H2S气体所采取的措施及具体做法,可为矿井治理H2S气体提供借鉴的经验。
- The testing results of working face coal samples and roof impact tendency indicated that the coal seam belongs to high impact tendency and has pressure bumping possibility. 工作面煤样和顶板冲击倾向性测试结果表明,该煤层属于高冲击倾向性煤层,具有发生冲击矿压的能力。
- The coal seam of fully mechanized top-coal caving face 1151(3) in Xieqiao coal mine of Huainan mining area is soft and loose,and is of low permeability and poor wetting condition. 基于淮南矿区谢桥煤矿1151(3)综放面,煤层松软、渗透性低、湿润性差的特殊条件,采用煤层注水工艺技术降尘,在注水孔布置方式及参数、注水孔封孔工艺、注水工艺等方面采取一定的技术措施。
- The coal will be shipped by rail. 这些煤将用火车装运。
- At the same time, methane effusing from the coal seam being worked increases, and the emphases of methane control could be put on the methane effusing from coal seam being worked. 而大采长综放工作面本煤层瓦斯涌出量增大,则需要增加通风量或者采用新的通风方式。