软弱煤系地层下铁路双连拱隧道设计  

Design of Railway Double-arch Tunnel Buried Under Soft Coal Strata

作　　者：高建国[1] 

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《工程建设与设计》2011年第4期149-153,共5页Construction & Design for Engineering

摘　　要：鉴于传统中墙连拱隧道在结构受力性能、防排水效果等方面的缺陷,认为复合式曲中墙为软弱煤系地层下双连拱隧道理想的中墙结构型式。该结构施工过程中隧道衬砌台车和模板利用率高,能简化施工工序,可大大加快施工进度,节约成本。鉴于国内已建成的有关深埋软弱煤系地层下铁路双连拱隧道非常少见,遂通过对在建江西向(塘)-福建莆(田)准高速铁路某隧道连拱段的设计介绍,为今后类似工程的设计提供经验。In view of deficiencies of the traditional arch tunnel about the wall mechanical properties of the structure,waterproofing and drainage effects,that consider the compound wall is ideal structure type for wall of double-arch tunnel buried under the soft coal strata.During construction it can get high utilization of the formworking jumbo,can simplify the construction process,and can greatly speed up the construction schedule and cost savings.The existing railway double-arch tunnel buried under soft coal strata is very rare.The design of a tunnel arch section in the construction of Jiangxi Xiangtang-Fujian Putian quasi-high speed railway is introdued,which provide design experience for future similar projects.

关 键 词：煤系地层 双连拱隧道 复合式曲中墙 瓦斯 监控量测 超前地质预报 

分 类 号：U452.27[建筑科学—桥梁与隧道工程]