1) big-sectional undermining entering hole
大断面暗挖进洞
2) large-section excavation
大断面开挖
1.
This paper analyzes the feasibility of adopting the large-section excavation in soft wall rock tunnel, introduces the new techniques of the smooth blasting on the arch part of peripheral hole and the side-wall presplitting blasting, which provide some practicable experiences for the tunnel excavation under similar conditions.
分析了软弱围岩隧道采用大断面开挖的可行性,介绍了周边孔拱部光面爆破、边墙预裂爆破的新技术,为类似条件下的隧道开挖提供一些可行经验。
3) large section cavity
大断面洞库
4) large section tunnel
大断面隧洞
1.
The numerical simulation analysis of large section tunnel construction
大断面隧洞施工的数值模拟分析
5) mining excavation of middle tunnel
暗挖中洞法
1.
The method of mining excavation of middle tunnel, with enormous constructing difficulties and great safety risks, was firstly applied in No.
目前国内地铁车站完全采用暗挖法施做并已投入使用的仅有北京地铁西单站、天安门西站、东单站和王府井站，主要是采用洞柱法、桩柱法和“双眼睛法”施工，而暗挖中洞法施工技术在国内双层地铁车站中还是首次在北京地铁五号线采用，施工难道大、安全风险大。
6) open excavation changing into hidden hole
明挖改暗洞
1.
3 contract in Rui-Feng railway,the construction design scheme and construction controlling points of open excavation changing into hidden hole construction were introduced.
根据瑞枫公路改建工程第三合同ZK7+255~ZK7+310段路基由明挖路基施工改为隧道施工的实例,介绍了明挖改暗洞施工设计方案和施工控制要点,在总结该段浅埋、偏压隧道施工经验的基础上,作了技术经济比较。
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