中隔壁法开挖工序对浅埋偏压小净距隧道稳定性影响研究  

Research on Influence of Excavation Process with Center Diaphragm Method on Stability of Shallow-buried Tunnel with Eccentric Pressure and Small Clear Distance

作　　者：高帅 胡明香 李文彪 Gao Shuai;Hu Mingxiang;Li Wenbiao(Jiangxi Province Gannan Highway Survey and Design Institute,Ganzhou 341000,China;Ganzhou Water Group Co.,Ltd.,Ganzhou 341000,China)

机构地区：[1]江西省赣南公路勘察设计院,赣州市341000 [2]赣州水务集团有限责任公司,赣州市341000

出　　处：《北方交通》2021年第11期87-91,94,共6页Northern Communications

摘　　要：以中隔壁法开挖工序为研究对象,探讨不同的隧道开挖工序对浅埋偏压小净距隧道围岩变形、地表沉降和初支结构变形的影响。研究结果表明:中隔壁法反向开挖工序对围岩稳定性影响最小,同时若左洞先行则对右洞围岩稳定性影响较大,若右洞先行则对左洞围岩稳定性影响较大。Taking the excavation process with center diaphragm method as the research object,the influence of different tunnel excavation processes on the deformation of surrounding rock,surface settlement and initial support structure deformation of shallow-buried tunnel with eccentric pressure and small clear distance is discussed.The research results show that:the reverse excavation process with the center diaphragm method has the least impact on the stability of surrounding rock.At the same time,if the left tunnel is excavated first,it has a greater impact on the stability of surrounding rock of the right tunnel,and if the right tunnel is excavated first,it has a greater impact on the stability of surrounding rock of the left tunnel.

关 键 词：浅埋偏压小净距隧道 中隔壁法 开挖工序 反向开挖 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]