基于“零开挖”理念的高铁隧道进洞方案研究  

Research on Tunnel Entry Scheme of High-speed Railway Tunnel Based on the Concept of"Zero Excavation"

作　　者：路美丽 Lu Meili(China Railway Fifth Survey and Design Institute Group Co.,Ltd.,Beijing 102600,China)

机构地区：[1]中铁第五勘察设计院集团有限公司,北京市102600

出　　处：《北方交通》2022年第5期71-74,共4页Northern Communications

基　　金：中铁第五勘察设计院集团有限公司科研课题(T5Y2019-C05)。

摘　　要：近年来随着高铁建设的快速发展和环保要求的提高,隧道洞口“零开挖”理念越来越受到人们的重视。结合安九高铁隧道具体工程地质条件和地形条件,采用“零开挖”进洞方法对原设计方案进行了优化。通过适当延长暗洞长度及调整管棚护拱长度,大幅降低了边仰坡开挖高度和挖方量及洞口占地,达到了“零开挖”仰坡进洞、稳定仰坡、保护生态环境的目的。In recent years,with the rapid development of high-speed railway construction and the improvement of environmental protection requirements,the concept of"Zero Excavation"at the tunnel portal has attracted more and more attention.In combination with the specific engineering geological conditions and topographic conditions of Anqing-Jiujiang high-speed railway tunnel,the original design scheme is optimized by using the tunnel entry mode of"Zero Excavation".The excavation height and excavation volume of the side and front slope and the area occupied by the portal are greatly reduced by appropriately extending the length of the concealed tunnel and adjusting the length of the pipe shed guard arch,so as to achieve the aim of front slope tunnel entry of"Zero Excavation",stabilize the front slope and protect the ecological environment.

关 键 词：隧道洞口 进洞方案 零开挖 环境保护 

分 类 号：U455[建筑科学—桥梁与隧道工程]