偏压隧道开挖方法和监测数据分析——以回头沟隧道为例  

Analysis of Biased Tunnel Excavation Method and Monitoring Data:A Case Study of Huitougou Tunnel

作　　者：代树林[1] 万怡祯 DAI Shu-lin;WAN Yi-zhen(Construction Engineering College,Jilin University,Changchun 130026,China)

机构地区：[1]吉林大学建设工程学院

出　　处：《科学技术与工程》2019年第27期364-369,共6页Science Technology and Engineering

基　　金：吉林省交通厅科技项目(2014-4-1-10-2)资助

摘　　要：依托回头沟隧道工程,采用Mohr-Coulomb强度准则数值分析台阶法、环形开挖留核心土法、交叉中隔墙法、单侧壁导坑法四种开挖方法,结果表明单侧壁导坑法变形值最小;通过现场监测隧道地表和围岩变形情况,研究发现当地表不对称时左右两侧地表和围岩变形规律不同,深埋侧位移大于浅埋侧;当地表平坦时,左右围岩变形规律相同;监测结果与数值分析结果相同,可为今后隧道开挖方法选择提供参考。Depending on the Huitougou tunnel project,the Mohr-Coulomb strength criterion was used to four excavation methods,namely,bench cut method,ring cut method,center cross diagram method and single side drift method.The results show that the minimum deformation was single side drift method.According to monitor the tunnel,it is concluded that when the local surface is asymmetric,the surface and surrounding rock deformation rules on the left and right sides are different,and the displacement of the deep buried side is greater than that of the shallow buried side.When the local surface is flat,the deformation law of surrounding rocks is the same.The monitoring results are the same as the numerical analysis results,which can provide a reference for the selection of tunnel excavation methods in the future.

关 键 词：偏压隧道 围岩变形 数值模拟 现场监测 

分 类 号：U455[建筑科学—桥梁与隧道工程]