摘要
为探讨高速公路特长隧道竖井辅助正洞施工技术,以昌宁隧道利用竖井辅助正洞施工的方案设计和工程实践为背景,对竖井辅助正洞施工方案设计、竖井施工方法、竖井转正洞施工方法进行了研究,结果表明:复杂地质条件下特长公路隧道利用竖井进行辅助正洞施工是可行的;竖井采用“正井法”开挖及模筑混凝土初期支护结构、横通道“大包法”转正洞可以安全高效地完成竖井开挖及转正洞施工;昌宁隧道成功利用竖井辅助正洞施工,充分验证了复杂地质条件下特长隧道利用竖井辅助正洞施工的技术可行性及经济适用性。成果可为相关工程提供参考。
To explore the technology of using shaft to assist construction in super-long highway tunnel,the article makes a study on the project design,shaft construction method,construction of shaft to tunnel,and comes the following conclusions:It is feasible to use shafts to auxiliary main tunnel construction in extremely long highway tunnels under complex geological conditions.Using the"main shaft method"and the initial support structure of concrete,full-envelope construction method can safely and efficiently complete the excavation of shafts and the construction of turning tunnels.The successful use of shafts to assist in the construction of the main tunnel in Changning Tunnel has fully verified the technical feasibility and economic applicability of using vertical shafts to assist in the construction of the main tunnel in extremely long tunnels under complex geological conditions.The findings may serve as practical guidelines for similar engineering applications.
作者
杨康
刘渊
刘能源
钟华
杨毅
YANG Kang;LIU Yuan;LIU Nengyuan;ZHONG Hua;YANG Yi(Guangxi Road and Bridge Engineering Group Co.,Ltd.,Nanning 530200,China)
出处
《粉煤灰综合利用》
2025年第3期140-144,共5页
Fly Ash Comprehensive Utilization
基金
广西重点研发计划项目(桂科AB22080020)。
关键词
特长隧道
竖井
辅助施工
正井法
模筑混凝土初期支护
大包法
super-long tunnel
shaft
auxiliary construction
front well drill method
mode concrete initial support
full-envelope construction method
