盾构法隧道施工地层变形管控分析  

Analysis on Stratum Deformation Control of Shield Tunneling

作　　者：葛存源 席培胜 穆琳 胡彩云 GE Cunyuan;XI Peisheng;MU Lin;HU Caiyun(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China;Anhui Engineering Research Center of Urban Construction and Underground Space,Hefei 230601,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601 [2]安徽省城市建设和地下空间工程技术研究中心,安徽合肥230601

出　　处：《兰州工业学院学报》2022年第3期44-47,68,共5页Journal of Lanzhou Institute of Technology

摘　　要：针对地表变形对盾构施工和周围建筑物、管线安全的影响,以合肥地铁1号线三期工程隧道盾构施工为研究背景,利用有限元软件Midas-Gts对盾构隧道掘进施工全过程进行数值模拟,并对同步注浆、土仓压力、推进速度、出渣量4个方面进行了管控对策分析。结果表明:盾构周围的土体沉降是渐变的,不同时间沉降量不同,距轴线越近的地方沉降量越大;随着时间推移,沉降量逐渐增加。In view of the impact of surface deformation on shield tunnel construction and the safety of surrounding buildings and pipelines,taking the shield tunnel construction of The Third Phase of Hefei Metro Line 1 as the research background,the finite element software Midas-Gts was used to numerically simulate the whole process of shield tunnel boring construction,and the control countermeasures were analyzed in four aspects:synchronous grouting,soil warehouse pressure,propulsion speed and slag discharge.The results show that the sedimentation of the soil around the shield tunnel is gradual,and the sedimentation is different at different times,and the settlement amount is greater the closer to the axis,and the sedimentation gradually increases with the passage of time.

关 键 词：盾构法 Midas-Gts 地层变形 管控对策 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]