1) gob-side entry retaining with small section
小断面留巷
2) small section entry retaining along gob side
沿空小断面留巷
1.
Taking 5201 face, Wangzhuang coal mine as an example, the measures of preventing gas consistence exceeding normal value were put forward, that is, applying small section entry retaining along gob side and layout of J-shape ventilation system.
以王庄煤矿5201综放面为例,提出采用综放沿空小断面留巷技术,布置J型通风系统,治理综放工作面瓦斯超限。
3) gob-side entry retaining with large section
大断面留巷
4) hard rock roadway with small cross-section
小断面硬岩巷道
5) cross-section
[英]['krɔ:s'sekʃən, 'krɔs-] [美]['krɔs'sɛkʃən, 'krɑs-]
井巷断面
1.
The sizes of cross-section are related to the drivage costs,maintenance costs and ventilation electric costs.
井巷断面大小直接关系到掘进费、维护费和通风电费。
2.
In this paperle sum up the optimization methods presented dy different experts and scholars,put forward a path method of cross-sect-ions optimization,and provide a new technicalmethad for reasonable determination of cross-section.
本文在总结国内外的断面优化方法的基础上,提出了断面优化的通路法,为井巷断面的合理确定提供一种新的技术途径。
6) roadway section
巷道断面
1.
Optimizing roadway section and lifting mine benefit;
优化巷道断面 提高矿井效益
补充资料：异形断面钢材(见异形断面型材)
异形断面钢材(见异形断面型材)
special section steel
，一、u以uu、’“飞豆on gQngC01异形断面钢材(speeial Seetion steel)见异形断面型材。
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