摘要
通过对深圳地铁Ⅰ期工程浅埋暗挖法施工的重叠隧道现场调研,并结合施工中的试验、监测成果对重叠隧道上覆地层(地表、地中)水平、竖向变形和隧道结构变形进行了综合分析,明确了富水含砂软弱地层地铁隧道拱顶沉降大于地表沉降的事实,得到地层变形的三维变化规律和重叠隧道分步开挖的施工时空效应;并实测得到未降水施工条件下隧道结构周边超静孔隙水压力分布及其随开挖变化规律。研究结果对于同类地层条件下地铁隧道设计、施工有一定的借鉴作用。
By the in-suit investigation of some Lot of Shenzhen Metro project Phase I and the test and construction monitor results, comprehensive research have been achieved in stratum and tunnel structure deformation. It is shown that tunnel vault settlement is more than ground settlement in watery, weakly and sandy stratum; then 3D movement trend of stratum deformation and construction space-time effects of each excavation step of overlap tunnel are gained. Finally, excess pore water pressure are measured around tunnel structure; and the distribution and movement regularity with excavation are displayed in no precipitation condition. The results can be used for reference in design and construction of metro tunnels under similar stratum.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2007年第12期2634-2638,共5页
Rock and Soil Mechanics
关键词
重叠隧道
地层变形
浅埋暗挖法
超静孔隙水压力
overlap tunnel
stratum deformation
shallow tunnel construction method
excess pore water pressure
作者简介
黄俊，男，1979年生，博士研究生，主要从事隧道与地下工程方面的设计与研究工作。E—mail：rainhjun@126．com；hjun310@sina．com
