官地水电站地下厂房开挖施工技术研究

官地水电站地下引水发电系统工程规模庞大，总共布置了约40条洞室，这些洞室交错布置，形成庞大复杂的地下洞室群。主要洞室尺寸庞大，其中地下厂房是目前国内外在建工程中跨度较大的地下结构。本文介绍了官地电站主厂房开挖与支护的施工程序和方法，旨在说明合理的施工通道布置及施工组织设计是确保地下洞室，特别是大型地下厂房系统工程质量、施工工期的关键。

Research of Underground Workplace Excavation Construction Technology in Guandi Hydropower Station

Underground diversion power generation system project in Guandi hydropower station has large scale a total of about 40 caverns are arranged, these caverns are staggered for arrangement, thereby forming huge and complex underground caverns. The main cavern has huge size, wherein the underground workplace belongs to underground structures with larger span in domestic and foreign projects under construction currently. This article describes the construction procedures and methods of main workplace excavation and support in Guandi hydropower station, and aims at showing that rational construction channel layout and construction organization design are the keys for ensuring engineering quality and construction period of underground cavern, especially large underground workplace system