白石关隧道改进交叉中隔墙法施工技术分析  

Analysis of an Improved Cross Diaphragm Method in the Baishiguan Tunnel Excavation

作　　者：康宝 包华 李犇 KANG Bao;BAO Hua;LI Ben(Changye Engineering Design Group Co.Ltd.,Shaoxing Zhejiang 312000;Shaoxing University,Shaoxing Zhejiang 312000)

机构地区：[1]长业建设集团有限公司,浙江绍兴312000 [2]绍兴文理学院,浙江绍兴312000

出　　处：《土工基础》2022年第6期807-811,共5页Soil Engineering and Foundation

基　　金：浙江省建设科研项目(2017K179)。

摘　　要：浅埋穿山隧道的开挖技术是土木工程施工中的一个重要研究课题。以白石关隧道工程为例,提出了基于预留核心土的交叉中隔墙法的改进施工方案。结合基本施工工艺和关键施工环节两方面讨论了新方案的主要施工技术,从拱部小导管超前支护、开挖和支护、仰拱填充、临时支撑拆除、监测信息反馈等五方面论述了现场施工与管理要点。工程结果表明,改进交叉中隔墙法具有优化施工工艺、信息化施工、节约工期和投资等优点。相关结果可供该工程实际工程参考。The excavation method of shallow buried tunnels in the mountain area is an important topic in the civil engineering construction.An improved tunnel excavation that reserving the core area by using Cross Diaphragm(CRD)method was applied in the Baishiguan Tunnel excavation.The main construction aspects of this new method are discussed from the construction principles and key construction steps.The key points of the site construction management are discussed from five aspects:advanced support by using the small diameter pilot pipe,excavation and support,inverted arch filling,temporary support removal,and prediction information feedback.The engineering results show that the improved CRD method has the advantages of optimizing the construction technology,information construction,saving construction schedule and investment.The relevant results can be used as reference for actual engineering project.

关 键 词：施工技术 隧道工程 改进交叉中隔墙法 开挖方案 

分 类 号：U456[建筑科学—桥梁与隧道工程]