多层初期支护在景寨隧道软弱围岩中的应用  

Application of Multi-Layer Initial Support in Soft Surrounding Rock of Jingzhai Tunnel

作　　者：喻有彪 YU You-biao(Yunnan South Railway Co.Ltd.,Yuxi 653100,China)

机构地区：[1]滇南铁路有限责任公司,云南玉溪653100

出　　处：《工程建设与设计》2022年第10期56-58,共3页Construction & Design for Engineering

基　　金：中国铁路昆明局集团有限公司2021年科研计划重大课题(K21C25)。

摘　　要：景寨隧道为玉磨铁路关键控制性工程,在克服断层影响的高地应力顺层偏压产生的大变形实践过程中,摸索出合适的多层初期支护施工工序,形成以多层初期支护为主要措施的综合方案,在变形控制、进度指标提升、经济性提升等方面均取得了较好效果。Jingzhai Tunnel is a key control project of Yumo Railway.In the practice process of overcoming large deformation caused by bedding bias due to high ground stress influenced by faults,appropriate construction process of multi-layer initial support is explored and a comprehensive scheme with multi-layer initial support as the main measure is formed,which has achieved good results in deformation control,progress index improvement and economic improvement.

关 键 词：单线隧道 软弱围岩 大变形 多层支护 施工工序 

分 类 号：U455.7[建筑科学—桥梁与隧道工程]