roof-coal

基本解釋

Mechanical model for the elastic thick outrigger of roof coal is set up.
建立了頂煤彈性深梁力學(xué)模型，分析了頂煤應(yīng)力分布及頂煤破壞形式。
According to the conditions of seam No.5 in Shifengshan Coal Mine,longwall face roof coal drawing method is chosen.
通過對峙峰山煤礦5號煤采煤方法的設(shè)計,提出了采用綜采放頂煤法回采5號煤。
This technique has been used successfully in the air-return gate oJ" 1310 fully mechanized roof coal caving face in Zhangcun Coal Mine.
該項研究在漳村1310綜放面回風(fēng)巷的工程實踐中得到了成功應(yīng)用和檢驗。
blasting mining with caving of roof coal
炮采放頂煤
She and I can't live under the same roof.
她和我不能住在一起。