矿业科学学报2025，Vol.10Issue(2)：259-270,12.DOI:10.19606/j.cnki.jmst.2024927
软土盾构掘进竖向姿态分析及控制策略研究
Vertical attitude and its control strategy for shield tunneling in soft soil
摘要
Abstract
This study proposes a method for calculating the loosened soil pressure applicable to shield tunneling in cohesive soil layers based on the modified ellipsoid theory as a solution to existing difficul-ties in attitude control of shield machines when traversing soft and weak strata such as loess and coastal soft soil.Specifically,we established a theoretical model for shield-machine-soil interaction using equiv-alent soil springs to analyze the vertical displacement,pitch angle changes and attitude adjustment of the shield machine.By comparing with the construction monitoring data of the shield machine traversing the loess plateau in the South Line of Hanjiang-to-Weihe River Water Diversion Phase Ⅱ Project,we verified the accuracy of this theoretical model in predicting the attitude changes and correcting thrust calculation of shield tunneling in soft soil strata.Sensitivity analysis of parameters shows that 1)the ver-tical displacement and vertical force of the shield machine exhibit a parabolic variation;2)the pitch angle of the shield machine and the vertical plane torque show a cubic parabolic variation.With the in-crease of torque,the attitude changes from downward pitch to upward pitch;3)as the proportion of soft soil in the strata increases,the settlement and downward pitch of the shield machine increase;4)adjusting the propulsion system generates low significant thrust difference in the upper and lower parts of the shield tail,which could realize settlement control of the shield machine and correction of pitch angle.关键词
盾构隧道/软土地层/相互作用/盾构姿态控制Key words
Shield tunnel/soft ground/interaction/shield attitude control分类
矿山工程引用本文复制引用
赵凯,黄昕,谢良甫,王建虎,晋智毅..软土盾构掘进竖向姿态分析及控制策略研究[J].矿业科学学报,2025,10(2):259-270,12.基金项目
上海市科委社会发展领域重大项目(21DZ1201103) （21DZ1201103）
陕西省自然科学基础研究计划-引汉济渭联合基金(2021JLM-50) （2021JLM-50）
自治区高校基本科研业务费(XJEDU2023P010) （XJEDU2023P010）
