铁道科学与工程学报2016，Vol.13Issue(5)：906-913,8.
陡坡偏压小净距隧道施工扰动空间效应研究
Study on construction disturbance spatial effect of bias tunnels with s mall interval and steep slope
摘要
Abstract
In order to understand construction disturbance induced spatial effect of bias tunnels with small inter-val and steep slope,this paper took the Paitou tunnel as an example to carry out the whole process of three-di-mensional simulation of tunnel construction based on the engineering practice and analyze the construction dis-turbance effect of surrounding rock.The focus was on the evolution characteristics and regularity of displacement and stress in the middle rock pillar.The results show that the early stage of following tunnel excavation is the most important period to control the deformation in the whole process of construction due to the superposition effect of terrain bias and construction bias,and that the key period of stress state control in the middle rock pillar is the stage of existing tunnel excavation.The key region is the arch foot of existing tunnel during the existing tunnel excavation and the arch foot to wall foot of existing tunnel during the following tunnel excavation and the arch foot to wall foot of following tunnel during the following tunnel excavation.关键词
小净距/偏压隧道/中夹岩柱/扰动空间效应Key words
small interval/bias tunnel/middle rock pillar/disturbance spatial effect分类
交通工程引用本文复制引用
吴德兴,李伟平,谢宝超,王薇,潘文硕..陡坡偏压小净距隧道施工扰动空间效应研究[J].铁道科学与工程学报,2016,13(5):906-913,8.基金项目
浙江省交通运输厅科研计划资助项目（2013H04）；国家自然科学基金资助项目 （）
