铁道科学与工程学报2018，Vol.15Issue(1)：156-162,7.
不同浸水方式对黄土地铁隧道变形影响研究
Study on the influence of different flooding methods on the deformation of loess metro tunnel
摘要
Abstract
Based on the underground loess tunnel between Gongxingdun Station and Jiaojiawan Station on the metro line 1 in Lanzhou, two kinds of models of layered finite element numerical model were established by using MIDAS GTS software, where the mold modification method was adopted with the consideration of the two typical immersion types, i.e. from ground surface to bottom (surface water infiltration) and from bottom to ground surface (underground water level rising). The influence of two types of immersion on the tunnel deformation was simulated and analyzed. The results indicated that the different immersions did not change the final settlements. The settlement velocity of the immersion from bottom to ground surface (underground water level rising) were lager than the other type, i.e. the immersion type from ground surface to bottom (surface water infiltration), and might occur more suddenly. The collapse in deep loess was more unsafe and more adverse to the monitoring, early warning and prevention of metro tunnel settlement.关键词
黄土地铁/数值模拟/湿陷性/沉降量Key words
loess subway/numerical simulation/collapsibility/settlement分类
交通工程引用本文复制引用
王二磊,梁庆国,王飞,向亮..不同浸水方式对黄土地铁隧道变形影响研究[J].铁道科学与工程学报,2018,15(1):156-162,7.基金项目
国家自然科学基金资助项目(41562013) （41562013）
长江学者和创新团队发展计划资助项目(IRT1139) （IRT1139）
