摘要
双线大断面铁路隧道通过碳质板岩地层时,极易发生大变形。在现场工程实践和试验的基础上,文章从地质条件、地下水、支护参数、施工工艺等方面着重对碳质板岩地段变形演化机理及引发大变形的各类因素进行了分析,并提出了优化支护参数、加强锚杆对结构变形的控制、注浆纳入工序化管理等控制此类大变形的措施。
Large deformations are liable to occur for a double-track railway tunnel with large profile passing through carbonaceous slate stratum.Based on the engineering practice and experiments,the paper analyzes the mechanism of deformation evolution on carbonaceous slate sections and various impacting factors in terms of geological conditions,underground water,support parameters and construction technology.Furthermore it puts forward measures such as optimization of support parameters,structural deformation control by anchor bolt and grouting.
出处
《现代隧道技术》
EI
北大核心
2011年第2期68-72,共5页
Modern Tunnelling Technology
关键词
碳质板岩
大断面隧道
变形控制
Carbonaceous slate
Large profile tunnel
Deformation control
