摘要
结合南山隧道施工方案,针对该隧道围岩较差、易发生突水、突泥和变形塌方的特点,探讨隧道洞口和洞身开挖施工中不同围岩级别下的开挖方法,介绍了三台阶法、台阶预留核心土法、上下台阶法施工技术以及初期支护和辅助施工措施。
Combined with the construction scheme of Nanshan tunnel,according to the characteristics of poor surrounding rock,easy occurrence of water inrush and gushing and collapse,this paper discussed excavation methods under different surrounding rock grade,introduced three steps method,reserving the core soil method,upper and lower step method and initial support and auxiliary construction measures.
作者
闫大伟
YAN Dawei(Liaoning Traffic Construction Management Co. , Ltd. , Shenyang, Liaoning l l O000, Chin)
出处
《施工技术》
CAS
2018年第13期62-64,70,共4页
Construction Technology
关键词
隧道工程
围岩
开挖
支护
施工技术
tunnels
surrounding rock
excavation
supports
construction
