shallow underground excavation 浅埋洞室 ; 浅埋暗挖
mine underground excavation 矿山法暗挖
Large Underground Excavation 大型地下挖掘工程
underground excavation cluster 地下洞室群
underground excavation engineering 井巷工程
tunnel and underground excavation 洞挖及地下开挖
shallow cover underground excavation 浅埋暗挖法
NATM and shield driven method are two main kinds of underground excavation construction methods in urban metro works.
浅埋暗挖法和盾构法是城市地铁采用暗挖施工的两种主要的暗挖施工方法。
This paper puts forward the concept and method about the network graphics of underground excavation cluster of hydropower station firstly.
本文首先提出了水电站地下洞室群空间网络图化的概念和方法。
Because of the poor strength and the typical creep character of the soft rock, it is difficult to excavate and support the underground excavation.
软岩强度低，且具有明显的蠕变特性，常给地下巷道的开挖和支护带来很大的困难。
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