云南水力发电2024，Vol.40Issue(10)：162-167,6.DOI:10.3969/j.issn.1006-3951.2024.10.035
滇中红层软岩隧洞不良地质段施工技术研究
Research on Construction Technology of Poor Geological Section of Red Layered Soft Rock Tunnel in Central Yunnan
摘要
Abstract
The water diversion project in central Yunnan has a long route,spanning multiple geological structural units,and is widely affected by active faults,high groundwater,high stress,and large deformation of soft rocks.The red layered soft rock cave section in central Yunnan is concentrated on Dali and Chuxiong railway lines.Among them,the upstream control section of Fenghuangshan Tunnel inverted siphon traffic tunnel in Chuxiong section crosses the soft rock of the red layer in central Yunnan andYuanmou Lvzhi River fault zone.During the construction process of this section,the construction team fully utilized advanced geological forecasting,advanced support,reserved deformation,layered and segmented excavation,multiple support types,monitoring and measurement,and timely closure into a ring.It incorporates multiple control factors into excavation and support construction,increases tunnel stability,improves safety assurance rate,and forms a construction technology suitable for the unfavorable geological section of the red layer soft rock in central Yunnan.关键词
滇中红层软岩/隧洞/断裂带/开挖支护/施工技术Key words
red layered soft rock in central Yunnan/tunnel/fault zone/excavation support/construction technology分类
建筑与水利引用本文复制引用
龚元江,贾生栋,聂启强..滇中红层软岩隧洞不良地质段施工技术研究[J].云南水力发电,2024,40(10):162-167,6.基金项目
云南省重大科技专项计划项目(202102AF080001) （202102AF080001）
