collapse of roof 中文意思是什麼
collapse of roof
解釋
頂板崩落-
Observations indicate that breakup occurs not by collapse of the bubble roof but by the bottom being drawn up into the bubble.
觀察指出破裂的發生不是由於氣泡頂部的崩潰,而是由於其底部被向上曳入氣泡。 -
If explosives are used, vibrations will cause the roof of the mine to collapse.
若是用炸藥,震動會使礦井的頂部倒塌。 -
If explosives are used, vibrations will cause the roof of the mine to collapse
如果用炸藥爆破,震動會引起礦頂塌落。 -
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。
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