摘要
以地铁超小间距隧道施工中的地表沉降及其规律为研究目标,根据广州地铁三号线岗石区间超小间距隧道的施工实践,采用实测资料分析和数值计算的方法,研究了地表沉降的过程和阶段,将沉降过程划分为4个阶段,后掘隧道开挖引起先掘隧道的地表沉降约为地表沉降总量的30%~40%;两隧道的变形破坏区在T型土体内连为一体,T型土体成为地表沉降最大的区域;提出了控制地表沉降的设计和施工方法。
The aim is to illustrate the land subsidence and its characteristics of neighborhood tunnels during excavation. With the engineering background of tunneling of Gang-shi Section of Guangzhou Metro, according to the results of monitoring and numerical simulation, the land subsidence process is divided into 4 stages and the land subsidence value and its characteristics during excavation of the neighborhood tunnels are analyzed. The design and construction measures to control land subsidence are proposed.
出处
《辽宁工程技术大学学报(自然科学版)》
EI
CAS
北大核心
2006年第5期717-719,共3页
Journal of Liaoning Technical University (Natural Science)
基金
上海市教委基金资助项目(0003237032)
广州市地下铁道总公司资助项目(J32T074)
关键词
隧道
地表沉降
监测
地铁
小间距
tunnels: land subsidence
monitoring, metro: neighborhood