渗流影响下冻结法施工地表冻胀变形规律与优化研究  

Study on the Law and Optimization of Surface Frost Heave Deformation under the Influence of Seepage

作　　者：林涌劼 林文彬 江武涛 夏博洋 胡俊[4,5] 高国耀 张京京 郎瑞卿 姜学军 Lin Yongjie;Lin Wenbin;Jiang Wutao;Xia Boyang;Hu Jun;Gao Guoyao;Zhang Jingjing;Lang Ruiqing;Jiang Xuejun(Fuzhou Metro Line 6 East Adjustment Section Co.,Ltd.,Fuzhou,China;School of Civil Engineering,Tianjin University,Tianjin,China;Key Laboratory of Coast Civil Structure Safety(Tianjin University),Ministry of Education,Tianjin,China;College of Civil Engineering and Architecture,Hainan University,Haikou,China;Marine Science and Technology Collaborative Innovation Center,Hainan University,Haikou,China;China Railway 18th Bureau Group Co.,Ltd.,Tianjin,China;College of Civil Engineering,Tianjin Chengjian University,Tianjin,China;China Railway 18th Bureau Group Municipal Engineering Co.,Ltd.,Tianjin,China)

机构地区：[1]福州地铁六号线东调段有限公司,福建福州 [2]天津大学建筑工程学院,天津 [3]滨海土木工程结构与安全教育部重点实验室(天津大学),天津 [4]海南大学土木建筑工程学院,海南海口 [5]海南大学海洋科技协同创新中心,海南海口 [6]中铁十八局集团有限公司,天津 [7]天津城建大学土木工程学院,天津 [8]中铁十八局集团市政工程有限公司,天津

出　　处：《科学技术创新》2025年第11期200-203,共4页Scientific and Technological Innovation

基　　金：福州地铁科技资助计划(JS6D-XM-KY-2024-001)。

摘　　要：人工地层冻结法作为隧道工程中一种常用的土层加固技术,其冻结效果易受地下水渗流影响,渗流作用使得地表冻胀变形值及位置变化,潜在引发临近建筑物发生病害。针对渗流场对冻结过程中温度发展的影响机制,基于COMSOL Multiphysics软件建立数值模型,分析不同渗流速度对冻结帷幕形成及地表冻胀变形的影响,揭示渗流-冻胀变形相互作用规律。研究结果表明:渗流通过削弱上游区域冻结效率,使隧道上下游土体冷量分布严重失衡,形成沿隧道纵向的非对称温度梯度分布;地表冻胀变形量随地下水流速增大呈非线性递增趋势,且下游侧土体冻胀过度容易导致地表呈现显著的不均匀变形,可能诱发邻近道路及地下结构的稳定性风险。As a commonly employed soil reinforcement technique in tunnel engineering,the artificial ground freezing method is susceptible to groundwater seepage that alters surface frost heave magnitudes and locations,potentially inducing structural damage to adjacent buildings.To investigate the influence mechanisms of seepage fields on temperature evolution during freezing,a numerical model was developed using COMSOL Multiphysics to analyze the effects of varying seepage velocities on freezing curtain formation and surface frost heave deformation,thereby elucidating the interaction mechanisms between seepage and frost heave.Results demonstrate that seepage diminishes upstream freezing efficiency,inducing severe thermal imbalance between upstream and downstream soils along the tunnel axis,which generates longitudinally asymmetric temperature gradients.Surface frost heave deformation exhibits a nonlinear increasing trend with groundwater velocity,while excessive downstream frost heave leads to pronounced differential surface deformation,posing stability risks to nearby roads and underground structures.

关 键 词：人工地层冻结法 冻胀变形 渗流 耦合 

分 类 号：U231.3[交通运输工程—道路与铁道工程] U455.49[建筑科学—桥梁与隧道工程]