土木工程与管理学报2025，Vol.42Issue(6)：28-37,46,11.DOI:10.13579/j.cnki.2095-0985.2025.20250239
富水砂质石灰岩地层管片上浮机理及控制措施
Study on the Mechanism and Control Measures of Segment Uplift in Shield Tunneling Through Water-Rich Sandy Limestone Stratum
摘要
Abstract
In shield tunnel construction,segment uplift poses significant risks to the structural integrity and operational stability.This study investigates the influence of grouting pressure ratio and the initial elastic modulus of the grouting body on segment uplift behavior.A fluid-solid coupling finite element model is developed,incorporating the time-dependent hardening characteristics of the grout to simulate the grouting diffusion process and its interaction with surrounding strata and tunnel segments.The results reveal a four-stage uplift evolution process:slow rise,rapid rise,slight decline,and sta-bilization.An increased grouting pressure ratio intensifies grout diffusion,resulting in greater uplift displacement,while a higher elastic modulus of the grouting body effectively reduces final uplift during the stabilization phase.Within the studied parameter range,the grouting pressure ratio exerts a more significant impact on uplift than the initial elastic modulus.The results show that by reasonably controlling the grouting pressure ratio,increasing the hardening rate of the grout,and adjusting the shield machine posture,the segment uplift is reduced by 55％,providing a certain level of assurance for the structural stability and safe operation of the tunnel.关键词
盾构管片/石灰岩地层/管片上浮/注浆压力比/流固耦合Key words
shield tunnel segment/limestone stratum/segment uplift/grouting pressure ratio/fluid-solid coupling分类
交通工程引用本文复制引用
李光耀,朱世龙,王可心,郭思苑,张旭彪..富水砂质石灰岩地层管片上浮机理及控制措施[J].土木工程与管理学报,2025,42(6):28-37,46,11.基金项目
城际铁路盾构隧道装配式智能建造技术研究(JJJ2022A01) （JJJ2022A01）
