This paper introduces excavation of the unfavorable geological section of tunnel project of Wanjiazhai YRDP, temporary brace and construction of concrete lining.
文中介绍了万家寨引黄隧洞工程不良地质洞段施工中的开挖，临时支护，混凝土衬砌等。
During the covered excavation of metro station, the temporary pavement system and the columns are the main components for bearing the vertical load.
在地铁车站盖挖法施工中，临时路面体系和中间立柱是结构竖向承载的主要构件。
The roadheader-borne temporary support is enabled to greatly increase the productivity of drift excavation, decrease hand labour for supporting, and ensure productive safety.
在掘进机上增加机载式临时支护机，可以大大提高掘进工作的劳动效率、降低支护工作劳动强度并保障生产安全。
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