roof caving 中文意思是什麼

roof caving 解釋
初次落頂
  • 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...
  • caving : 岸崩
  1. With the roof caving in, there were an increasing number of desertions.

    由於大勢已去，逃兵的人數日益增多。
  2. In 1981, as the roof was caving in, it seemed to our company a merger might be the only way out.

    1981年，我們的情況岌岌可危，同另一家公司合併似乎是我們公司唯一的出路。
  3. 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
  4. Mining horizontal pillars with hydraulic roof propping in longwall caving method

    在長壁式崩落法中用液壓支柱護頂回採水平礦柱
  5. Practice and cognition of gas drainage hole construction along roof trend in fully mechanized caving coal face

    綜放工作面頂板走向瓦斯抽放孔施工的實踐與認識
  6. First roof caving

    直接頂初次垮落
  7. Practice on drilling blasting mining replaced by caving mining with light hydraulic supports in soft roof, soft coal and soft floor seam

    煤層中炮采改為輕放開採的切眼支護實踐
  8. Analysis of the way for the main roof caving relating to the staggered sublevel caving method

    錯層位放頂煤方法老頂垮落方式分析
  9. To solve the problem of the relative difficulty in roof caving in highly tough top - coal, it is very important to study the mechanism of difficult caving of highly tough top coal

    摘要為了解決高韌性頂煤的冒放性較差的問題，對其難冒性機理進行研究是非常重要的。
  10. Theory analysis of gas hazard incident caused by roof caving

    頂板垮落誘發瓦斯災害的理論分析
  11. The preventive technology of section and wall caving in short distance broken roof comprehensive working face

    近距離破碎頂板綜采面片幫冒頂治理技術
  12. Similar materials simulation of moving laws analysis on roof strata with sublevel caving mining

    綜放開采上覆巖層運動規律相似材料模擬分析
  13. Collapse characteristics research on roof rock strata with 3dec in full - mechanized caving mining

    焦作礦區煤層瓦斯合理預抽期的研究
  14. Fully mechanized top coal caving mining technology under unstable thick seam with soft roof, soft coal and soft floor

    三軟不穩定厚煤層條件下綜采放頂煤技術
  15. Analysis of the rational mining process with caving method for the extremely unstable coal seams soft seam, soft roof and soft floor

    三軟極不穩定煤層合理采放煤工藝分析
  16. The practice of choosing and matching the fully mechanized top caving mining equipment them under soft roof, soft coal and soft floor

    三軟不穩定厚煤層綜放設備選型配套經驗
  17. Practice of first roof caving technology at comprehensive mechanical mining face in steep thick coal seam

    急傾斜特厚煤層綜放工作面超段高初次放頂的實踐
  18. Forced roof caving technology and application to goaf - side entry retaining

    沿空留巷錨桿支護技術研究及應用
  19. Gas control technique for non - mechanized face with roof caving mining

    分層非綜采放頂煤工作面瓦斯治理技術分析
  20. Practise in combined mining roof caving coal at lower position in large angle thick coal seam

    大傾角厚煤層低位綜采放頂煤實踐
分享友人
分享到 Line

分享到臉書