1) the losing of triangular coal
三角煤损失
1.
This paper has studied the top coal caving below roof and floor for horizontal section top coal caving in steep seam,and has analyzed the losing of triangular coal below roof and floor,and has researched the boundary state between coal and rock.
论文对急倾斜水平分段放顶煤顶底板处的顶煤放出进行了试验研究,分析了三角煤损失及煤岩分界线的状态,以底板三角煤采出率的大小为依据,对合理顶煤分段高度的取值及合理放煤支架位置的布置进行了研究;以顶板处放煤后煤岩分界线的状态为依据,对顶板影响区的顶煤放出提出了放煤时间控制放煤口何时关闭,而非见矸关门。
2) delta seam loss
三角煤损
3) Welfare loss triangle
福利损失三角形
4) top coal loss
顶煤损失
1.
This paper sums up the cause,form and quantity of top coal loss by analyzing thefeature of fully-mechanized sublevel caving mining.
通过对综放开采特点的分析，总结出顶煤损失的原因、形式、数量等规律，为提高顶煤回收率及保证安全生产提出了建议。
5) coal loss
煤炭损失
补充资料：标准煤(见煤当量)
标准煤(见煤当量)
standard coal
、~‘~1人、4《1工兀飞coal)见煤当等
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条