roof coal 中文意思是什麼

roof coal 解釋
留頂板煤
  • roof : n 1 屋頂，房屋；家屋。2 （放行李的）車頂；笠形罩。3 上頜。4 最高部，頂部；【礦物】頂板。5 【航空...
  • coal : n 1 煤，煤塊，煤堆。2 〈pl 〉〈美國〉（一堆）燒紅的煤。3 〈常 pl 〉〈英國〉（幾塊）供燃燒的煤。4 ...
  1. Practices on bolt, mesh, anchor and beam support in coal drift under unstable roof condition of cataclastic rock mass

    不穩定頂板煤巷錨網索梁支護實踐
  2. Control technology of composite roof in deep well coal bed

    深井煤層復合頂板控制技術
  3. A talk about the roof management of wangvili coal faces

    旺格維利採煤工作面頂板管理的探索
  4. Analysis of geological cause of local roof - fall in coal face

    採煤工作面局部冒頂的地質原因分析
  5. On august 6th, the roof of the crandall canyon coal mine in huntington, utah, collapsed. six miners are trapped

    八月六日，美國尤他州亨廷頓克蘭德爾峽谷煤礦的頂部坍塌。六位礦工被困其中。
  6. Methane drainage experimental research for the stress - relief roof stratum of working face of high gas coal seam

    高瓦斯綜采面頂板覆巖卸壓抽放瓦斯試驗研究
  7. For the tip - to - face roof stability, chock - fram type powered support only be applied to hard top - coal, shield - type powered support and chock - shield - type powered support can be applied to three top - coals

    通過分析，為保證端面頂板穩定，支撐式液壓支架僅適用於頂煤為硬煤的條件下，掩護式和支撐掩護式支架在三種頂煤條件下均可以適用。
  8. Practices on fully mechanized coal mining in deep inclined seam with hard roof, soft coal and soft floor

    軟底大傾角煤層綜采開采實踐
  9. Analysis on strata pressure of fully mechanized longwall coal mining face in soft roof, soft coal and soft floor seam

    三軟煤層綜采長壁工作面采場礦壓分析
  10. The design of light - duty roof caving coal hydraulic support equipped with flat tramcar

    輕型放頂煤液壓支架配套平板車設計
  11. Application of multifunction plank with trapezium - shed on supporting in seam with soft roof, floor and coal

    梯形棚多功能墊板在三軟煤巷支護中的應用
  12. Through analyzing on the different phenomena of gas pouring amount at different coal seam, different area at the same seam, different position at the same area, the coal thicknss, inclined angle, structure, roof and floor rock character and water content in coal est. geology factor are regarded as the main reason of effecting the gas pouring amount

    通過對不同煤層，同一煤層不同區域，同一區域不同地點瓦斯湧出量有很大差異現象的分析，認為煤層厚度、傾角、構造、頂底板巖性、煤中水分等地質因素是影響瓦斯湧出大小的主要原因。
  13. Talking about spreading combined mining roof coal technology at gentle inclined coal seam

    在緩傾斜煤層中推廣綜采放頂煤技術淺析
  14. A roof - coal - discharging test mining by predetonation in super high seam

    堅硬頂板特厚煤層預爆破放頂採煤試驗
  15. Standard specification for coal tar roof cement, asbestos free

    無瀝青煤焦油屋面水泥的標準規范
  16. The test results show that the drawing interval of 1. 5 m is helpful for controlling dead - unconsolidated thin sandstone of coal seam roof and reduce sand ratio of drawn top - coal

    試驗結果表明，放煤步距採用三采一放有利於控制頂板極鬆散細砂巖，降低放出頂煤的含砂率。
  17. The roof of cavern is regarded as an elastic beam with support at the midpoint and the coal pillars are regarded as bearings so as to establishing a cavern roof - coal pillar system

    摘要將頂板視為中點有支承的彈性固結梁，將煤柱視為支座，形成了頂板煤柱系統。
  18. Practice and application on shot firing and roof - coal technology in quot; three soft quot; coal seam

    煤層炮采放頂煤技術應用實踐
  19. Dynamic computer simulation of temperature field in goaf areas of fully - mechanized roof - coal caving face

    綜放面采空區溫度場動態數學模化及應用
  20. Numerical simulation of spontaneous combustion process in goaf areas by fully - mechanized and caving roof coal

    綜放面采空區遺煤自然發火過程動態數值模擬
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