unstable roof 中文意思是什麼

unstable roof 解釋
脆性頂板
  • unstable : adj. 1. 不穩定的，不牢固的。2. 不堅定的，動搖的，易變的，反復無常的。
  • 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...
  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. The results of numerical analysis on mined - out area indicate that the roof at mined - out areas is unstable and the rock in the roof is easy to collapse in this mine

    數值分析結果表明：夾溝礦采空區的頂板是不穩定的，頂板巖體容易發生垮落事故。
  3. It is pointed that the thick unconsolidated layers above roof have effect on post - buckling behaviors of key stratum, the equilibrium path of roof is unstable from breaking to final subsidence

    研究發現，頂板上覆厚鬆散沙層對關鍵層的后屈曲性態有影響；頂板從破斷至極限下沉其平衡路徑不穩定。
  4. 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
  5. 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
  6. Research and application of working face unstable roof treatment technique

    採煤工作面不穩定頂板治理技術的研究與應用
分享友人
分享到 Line

分享到臉書