2) expanded open cutting
扩大明挖
1.
With the Wuhan Pivotal Jiangan Mega Bridge of the He-Wu Railway as a practical example, the technique of expanded open cutting in combination with steel plate cofferdam for extra-deep foundation pits is presented in the paper, with the design of the steel plate inclosing structure theoretically analyzed to ensure the construction safety of the excavation of extra-deep foundation pits.
结合合武铁路武汉枢纽江岸特大桥实例,介绍扩大明挖与钢板桩围堰相结合的超深基坑开挖施工技术,并对钢板桩围护结构的设计进行理论分析,以确保超深基坑开挖施工安全,为类似工程提供有益借鉴。
3) excavation expansion of inclined well
斜井扩挖
4) tapping potentials and enlarging capacity
挖潜扩能
5) expanding boundary and digging potential
扩边挖潜
6) belling bucket
扩底挖斗
补充资料：暗挖法
见隧道及地下工程施工方法。
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