摘要
适用于大跨度黄土隧道的洞身开挖施工工法有很多。但是往往在隧道开挖过程中,随着围岩类别的不断变化,以及施工任务的需要,一成不变地按照设计工法施工,无法满足施工要求。在二郎山隧道施工过程中,施工方从工期任务及成本控制方面考虑,积极改进施工工法,从而达到了安全质量和经济等多重效益。这可为类似的工程项目提供参考。
There are many construction methods for tunnel excavation of large span loess tunnel. But often in the process of tunnel excavation, with the continuous changes of surrounding rock types and the needs of construction tasks, the construction method cannot meet the construction requirements. In the construction process of Erlangshan Tunnel, the construction personals consider from the aspects of construction period and cost control, and actively improve the construction method, so as to achieve multiple benefits such as safety, quality and economy. It could provide a reference for similar projects.
作者
张渊
Zhang Yuan(China Railway 15th Bureau Group City Construction Engineering Co. Ltd. , Luoyang Henan 471013, China)
出处
《铁道建筑技术》
2018年第3期81-85,共5页
Railway Construction Technology
基金
中铁十五局集团有限公司科技研发计划项目(2014B7)
关键词
黄土隧道
双侧壁导坑法
单侧壁导坑法
上下台阶环形开挖预留核心土法
loess tunnel
twin-side holing method
single-side holing method
reservation core soil of annular excavation with bench method
