宝兰客运专线石崖隧道下穿岩堆综合设计  

Integrated Design of Shiya Tunnel Crossing below Talus Deposit in Baoji-Lanzhou Passenger-dedicated Railway Line

作　　者：刘建红[1] 

机构地区：[1]中铁第一勘察设计院集团有限公司桥梁隧道处,西安710043

出　　处：《铁道标准设计》2012年第3期73-77,共5页Railway Standard Design

摘　　要：以宝(鸡)兰(州)客运专线石崖隧道工程为背景,针对洞口岩堆等不良地质条件,提出可靠、安全、有效的设计方案。结合工程的地形地质特点,设计方案中对隧道影响范围内的岩堆采用"锚索框架梁防护+锚索抗滑桩+接长明洞+拱盖法"的综合立体防护措施,并对隧道基底采用钻孔灌注桩进行处理。通过防护措施的设计,有效地保证了岩体的稳定性,为施工及行车创造了安全条件。The example in this paper is Shiya Tunnel of Baoji - Lanzhou Passenger-dedicated Railway Line.Reliable,safe,and effective design scheme was proposed to resist the unfavorable geology conditions such as talus deposit in the tunnel.Combined with the topographic and geologic characteristics of the tunnel,comprehensive and multidimensional protection measures were used in the design that were frame beam with anchor rope,anti-slide pile with anchor rope,extending open tunnel and arch cover method.In addition,cast-in-situ bored piles were used to treat the tunnel base.It is considered that the design of protective methods could ensure the stability of rock and could create safe conditions for construction and railway operation.

关 键 词：铁路隧道 岩堆 锚索抗滑桩 锚索框架梁 拱盖法 设计 

分 类 号：U452.2+7[建筑科学—桥梁与隧道工程]