摘要
阳平关至安康铁路增建第二线站前工程新分水岭隧道洞口位于滑坡体坡脚,隧道进洞开挖施工会改变滑坡体应力变化,极易诱发滑坡体裂缝发展,导致洞口位置滑坡。介绍了进口滑坡段的施工情况,包括进洞施工方法、支护体系、地基加固以及滑坡治理中的排水体系设置、反压平台和抗滑桩的修建等技术问题。目前新分水岭隧道进口段已经安全的通过了滑坡段,滑坡体也处于比较稳定可控制状态。
In the course of the construction of the Added 2 nd Line of the Yangpingguan-Ankang Railway,a station-front tunnel named New Fenshuiling Tunnel has to be built,the entrance of which is to be located at the foot of a landsliding body.As the excavation for the entrance of the tunnel will cause the stress of the landsliding body to change, the cracks in the landsliding body are extremely apt to develop,which may result in the landslide of the location of the entrance of the tunnel. Introduced in the present paper are the construction circumstance of the entrance section of the tunnel,which includes the construction methods for the entrance, the supporting system, the consolidation of the foundation, and the provision of the draining systems in the course of treating the landslide as well as the technical problems such as the counter pressure platform and the anti-slide piles. At present, the construction of the entrance section of the New Fenshuiling Tunnel has already safely passed the landsliding section and the landsliding body is found to be in a comparatively stable and controllable state.
作者
张效喆
ZHANG Xiaozhe(The 4th Engineering Co.Ltd.of the 20th Bureau Group of China Railway,Qingdao 266100,China)
出处
《国防交通工程与技术》
2020年第2期44-46,8,共4页
Traffic Engineering and Technology for National Defence
关键词
支护体系
地基加固
滑坡
反压平台
排水体系
supporting system
consolidate the foundation
landslide
counter pressure platform
draining system
