岩土力学2011，Vol.32Issue(6)：1690-1696,7.
地裂缝剖面形态对地铁隧道变形影响模型试验研究
Model test for influence of ground fissure profide pattern on deformation of metro tunnel
摘要
Abstract
To reveal the corresponding relationship between the void beneath the tunnel bottom and the longitudinal deformation of the metro tunnel, a model test of circler tunnel is carried out under the research background of Xi'an Subway passing through ground fissure active zones.The law of the longitudinal strain and the vertical displacement of the tunnel are studied caused by the different proffle activity pattems of ground fissure belts.With the increase of the dislocation between the hanging wall and the foot wall of ground fissure, the test results show that the expansion process of the separation between the bottom of tunnel and the soil layer under the tunnel can be divided into three stages, i.e.co-deformation stage.the initial stage of void and the development of void.In view of different profile activity situations of ground fissures, the stress in the structure presents variance considerably.Different designs are suggested to different profile pattems of ground fissure belts.Under the law of stress and strain of the tunnel in the model test, the trend of the void beneath the tunnel can determined by monitoring the stress of structure.The results can provide reference for the structure design and the safe operation of metro tunneL关键词
地裂缝剖面/模型试验/隧道/变形/脱空Key words
profile of ground fissure/ model test/ tunnel/ deformation/ void分类
天文与地球科学引用本文复制引用
李凯玲,门玉明,刘洋,姜容..地裂缝剖面形态对地铁隧道变形影响模型试验研究[J].岩土力学,2011,32(6):1690-1696,7.基金项目
国家自然科学基金资助(No.40772183,No.50908018) （No.40772183,No.50908018）
中央高校科研事业费资助项目(No.CHD2010JC073). （No.CHD2010JC073）
