大跨软岩隧道近接下穿古长城遗址施工技术研究  

Study on the construction technology of long span soft rock tunnel passing near the site of the Ancient Great Wall

作　　者：林哲宇 Lin Zheyu(Qinghai Communications Holding Group Co.,Ltd.,Xining 810003,China)

机构地区：[1]青海省交通控股集团有限公司,西宁28810003

出　　处：《青海交通科技》2023年第5期145-149,共5页Qinghai Transportation Science and Technology

摘　　要：依托大跨软岩尕沟隧道近接下穿国家级文物明长城遗址工程,研究解决了在保证明长城安全、稳定的前提下实现隧道顺利下穿的问题。通过采取水平旋喷桩超前预加固、调整开挖方法、严控洞内变形、加强明长城本体监测等措施,最终达到隧道施工过程中及下穿后明长城始终处于稳定状态的技术目标,保护了明长城的历史风貌。This paper relies on the Dakuangaogou tunnel near the national cultural relics of the Ming Great Wall site project,research and solve in the premise of ensuring the safety and stability of the Ming Great Wall to achieve a smooth tunnel under the problem.In the process,measures such as pre-reinforcement of horizontal jet grouting pile,adjustment of excavation method,strict control of deformation in the tunnel and strengthening monitoring of the Ming Great Wall body were taken to finally achieve the technical goal that the Ming Great Wall was always in a stable state during the tunnel construction and after the tunnel penetration,which protected the historical feature of the Ming Great Wall.

关 键 词：大跨软岩隧道 明长城遗址 超前预加固 水平旋喷桩 开挖方法 监控量测 

分 类 号：U455.4[建筑科学—桥梁与隧道工程] TU-87[交通运输工程—道路与铁道工程]