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模型，分析了頂煤應力分佈及頂煤破壞形式。
According to the conditions of seam No.5 in Shifengshan Coal Mine,longwall face roof coal drawing method is chosen.
通過對峙峰山煤鑛5號煤採煤方法的設計,提出了採用綜採放頂煤法廻採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綜放麪廻風巷的工程實踐中得到了成功應用和檢騐。
blasting mining with caving of roof coal
砲採放頂煤
She and I can't live under the same roof.
她和我不能住在一起。