tunnel face meaning in Chinese

隧道洞门
隧道工作面
隧道口
隧洞口

Practice of effectively controlling of gas overrun in tunneling face
有效控制掘进工作面瓦斯超限的实践
The electromagnetic radiation monitoring of the stress state on 2218 tunnelling face in chengzhuang mine
成庄矿2218掘进工作面应力状态电磁辐射监测
This paper analyzes on the influence of the variation in thickness of coal seam and the supporting method on the coal quality , and based on this , advances some measures for reducing the gangue production to improve the coal quality on the tunneling faces
分析了煤层厚度变化和支护方式对煤质的影响,在此基础上提出了若干减少出矸以提高掘进工作面出煤质量的措施。
Using the electromagnetic radiation technology , this paper tests accurately the distribution of the stress areas in the front of the tunnelling face and on the both sides of the tunnel , confirms and estimates the reasonable hole sealing deepness of the gas pre - drawing in coal body
利用电磁辐射技术,准确测试了采掘工作面前方和巷道两帮侧的应力区分布,确定和评价了煤体瓦斯预抽的合理封孔深度。