北京交通大学学报2016，Vol.40Issue(6)：1-6,6.DOI:10.11860/j.issn.1673-0291.2016.06.001
盾构法施工深埋斜井的围岩应力变形分析
Stress and deformation analysis of the surrounding rock of deep buried inclined shaft constructed with shield method
摘要
Abstract
It takes the main inclined shaft of Shenhua Xinj ie coal mine which is constructed with shield method as the obj ect of study in this paper,numerical analyses of the construction process of inclined shafts passing through 2 kinds of typical rocks are conducted,and the stress distribu-tion and deformation rules of surrounding rocks during construction are obtained.The results show that the distribution of stress releasing zones and plastic zones,the displacement changing rules of crown and invert of surrounding rocks in inclined shafts during excavation are basically the same with that in horizontal tunnels.The contours of the maximum principal stress and dis-placement of surrounding rocks within the influence scope of excavation are approximately paral-lel to the axis of inclined shaft,and the parallel degree is gradually decreased as the distance from the contours to the axis increases.The surface settlement varies nonlinearly with the depth of in-clined shaft,and the larger the buried depth is,the smaller the surface settlement is.The spatial influence areas of the excavation face of inclined shaft get greater as the mechanical properties of surrounding rock get worse.The spatial influence area ahead the excavation face is larger than that behind the excavation face,and the spatial influence area ahead the excavation face is 3 times of diameter,the spatial influence area behind the excavation face is 4 times of diameter of the in-clined shaft in this paper,which is larger than that of horizontal shield tunnels.关键词
斜井/盾构法/围岩/施工/变形/应力Key words
inclined shaft/shield method/surrounding rock/construction/deformation/stress分类
建筑与水利引用本文复制引用
储昭飞,刘保国..盾构法施工深埋斜井的围岩应力变形分析[J].北京交通大学学报,2016,40(6):1-6,6.基金项目
国家科技支撑计划资助项目(2013BAB10B06) （2013BAB10B06）
