Crane girders anchored to rock face is a new structure and has become core structure for construction and operation of underground powerhouse.
岩壁梁是一种新型结构，因而岩壁梁是地下厂房施工和运行的核心建筑物。
For this reason, this paper describes the structure features of main underground powerhouse, concrete construction program and construction method.
为此，就地下主厂房系统结构特点、混凝土施工程序、施工方法进行介绍。
The urban shallow large-section underground structure has become important and difficult part of engineering because of the complexity of its structure and construction.
城市浅埋大断面地下结构因其结构和建设的复杂性往往成为工程建设的重点和难点。
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