coal heading 中文意思是什麼

coal heading 解釋
沿煤層巷道
  • 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 ...
  • heading : n 1 標題，題名；題詞，信紙上端所印文字。2 斬首；（魚）去頭；（植物的）打尖，摘心。3 【建築】露頭...
  1. An old steam engine went slowly by, heading northeast, puffing great clouds of smoke and hauling a train of coal trucks.

    一輛老式蒸汽機車噴著濃煙，拖著一節又一節的煤車緩慢地向東北方向開去。
  2. Coal - heading production

    煤頭生產
  3. Study on gas emission law in winning and heading faces in luling coal mine

    蘆嶺煤礦採掘工作面瓦斯湧出規律探索
  4. An effective method for controlling outburst in heading face in laoyingshan coal mine

    老鷹山煤礦掘進工作面防治突出的有效方法
  5. The construction methods and caving protection measures for punching high thick and loosen soft coal seam in luling coal mine no. 2 dark tilt well in huaibei coal mine area are introducded. they include small section enlarged after the heading caving, high negative pressure and multi - raw drilling holes and strenous drawing - off, concentrated cross drill holes, cutting while drawing - off and putting the metal frame away

    介紹了淮北礦區蘆嶺煤礦2主暗斜井採用小斷面導硐后刷大、高負壓多排鉆強抽，密集交叉鉆孔邊掘邊抽及設置金屬骨架施工方法和防突措施揭穿高突特厚松軟煤層。
  6. Application research on gas emission features in heading faces in huainan coal mining area

    淮南礦區掘進面瓦斯湧出特性應用研究
  7. Based on rheologic and mutative mechanism of coal and gas outburst, this article discusses the forecast of outburst danger of in 7 ( superscript # ) coal heading face of jinjia mine by adopting coal and gas outburst volume dynamic index after blowing out. it determines the index critical value, and also presents the tentative testing result

    摘要基於煤與瓦斯突出流變突變機理，探討了金佳礦7 （上標# ）煤層掘進工作面採用放炮后落煤瓦斯湧出量動態指標預測突出危險性，確定了指標臨界值，並介紹了初步試驗效果。
  8. Gas outburst prevention technology in high gassy gateway heading face of quot; three soft quot; instability coal seam

    不穩定煤層高突區域掘進工作面瓦斯綜合治理
  9. Application of deep - foundation fixed - point traverse survey in lower slice heading in coal mine

    深基固定點導線測量在煤礦掘進下分層巷道中的應用
  10. Preliminary application of gas pre - drainage from coal seam by long holes in heading face to prevent coal and gas outburst

    掘進工作面應用長鉆孔預抽煤層瓦斯防止煤與瓦斯突出的效果
  11. Application of dynamic pressure water injection technology for coal winning face or heading face in daping mine

    採掘工作面淺孔動壓注水技術在大平礦的應用
  12. Graphical symbols for use in technical documentation of coal mine machinery - graphical symbols for machinery of coal winning and road heading

    煤礦機械技術文件用圖形符號採掘機械圖形符號
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