黄土隧道洞口浅埋偏压段关键施工技术研究  

Construction Aspects of Tunnel Entrance with Shallow Covered Slopes in Loess

作　　者：刘春龙[1] 朱苦竹[1] 江凡[1] 

机构地区：[1]桂林理工大学土木与建筑工程学院,桂林541004

出　　处：《土工基础》2012年第3期66-68,共3页Soil Engineering and Foundation

基　　金：国家自然科学基金(41102202);广西自然基金;山区公路隧道洞口病害调查与稳定性分析(编号-2010GXNSFB013012)

摘　　要：结合郑西铁路客运专线潼洛川隧道出口工程实例,介绍了大断面黄土隧道洞口浅埋偏压段的关键施工技术:长管棚加导向墙与超前小导管预支护,CRD施工方法,及利用监控量测反馈信息指导施工。实践证明,所采取的措施有效地控制了施工变形量,防止隧道塌方事故,为今后类似工程提供了有益的借鉴和指导。This paper documents a case history of the Tong-Luochuan Tunnel construction in the Zhengzhou-Xi＇an high speed passenger rail project. The construction aspects of the construction of a large cross section with shallow covered slope in the collapsible loess are introduced. These techniques include： Long pipe roof with guide wall and small diameter guide pipe grou- ting pre-shielding Cross Diaphragm （CRD） method Observation Method （construction is guided with the observed informa- tion）. The construction practice indicated that these construction techniques effectively reduced the deformation during the con- struction and prevented the tunnel collapsing accidents.

关 键 词：长管棚 小导管 CRD法 监控量测 

分 类 号：U453[建筑科学—桥梁与隧道工程]