关于有效降低隧道软弱围岩段沉降的研究  

Study on effectively reducing settlement of weak surrounding rock section of tunnel

作　　者：刘凯波 蒙立瀚 尚晓威 LIU Kaibo;MENG Lihan;SHANG Xiaowei(China Anneng Second Engineering Bureau Co.,Ltd.,Nanchang 330096,Jiangxi,China)

机构地区：[1]中国安能第二工程局有限公司,江西南昌330096

出　　处：《水利水电技术（中英文）》2022年第S02期42-44,共3页Water Resources and Hydropower Engineering

摘　　要：某山岭隧道洞口以全风化花岗岩为主,围岩级别为V级,工程地质条件很差。采用留核心土环形开挖施工,根据监控量测数据发现,拱顶下沉及周边位移量有趋于增加的趋势。为了安全作业,对隧道V级围岩段采取相应措施进行有效指导施工。The entrance of a mountain tunnel is mainly made of completely weathered granite,and the surrounding rock is grade V,so the engineering geological conditions are very poor.According to the monitoring data,it is found that the vault settlement and surrounding displacement tend to increase.In order to operate safely,the corresponding measures should be taken to effectively guide the construction of the V-Class surrounding rock section of the tunnel.

关 键 词：有效降低 软弱围岩 控制沉降 

分 类 号：U455.49[建筑科学—桥梁与隧道工程]