This paper briefly introduces the application of pin timbering of full coalroad in "islet faces".
文章对“孤岛面”全煤巷锚杆支护技术应用做了简要介绍。
2
Advancing hole is one of local prevent outburst measure at coalroad heading face in coal-and-gas outburst mine.
超前钻孔是煤与瓦斯突出矿井中煤巷掘进工作面的局部防突措施之一。
3
So we construct for the background by the Second Shizuishan Mining, tunneling of the coalroad and rock drift, carried on research to single tunneling technique of the horizontal tunnel.