中国铁道科学2025，Vol.46Issue(6)：87-98,12.DOI:10.3969/j.issn.1001-4632.2025.06.09
侧部浆液扩散模式对盾构隧道受荷变形影响试验研究
Experimental Study on the Influence of Lateral Grouting Slurry Diffusion Mode on the Load-Induced Deformation of Shield Tunnel
摘要
Abstract
When remediating the transverse elliptical deformation overrun of the shield tunnel using lateral grouting,the actual grouting effect often fails to meet expectations due to uncertainties of the diffusion direction and diffusion range of the slurry in soil.To improve the effectiveness of grouting in rectifying the deformation overrun of the tunnel,a comparative test was conducted on the influence of slurry diffusion modes on load-induced deformation of shield tunnels.Additional soil pressure in the stratum and around the shield tunnel,cross-sectional deformation,and peripheral displacements around the shield tunnel under the two slurry diffusion modes of cleavage diffusion and squeeze diffusion were analyzed respectively.The results show that compared to fracture grouting,compaction grouting achieved by placing a plastic bag at grouting pipe outlet induces more concentrated additional earth pressure in the stratum and around the tunnel,higher additional pressures at the same grouting volume,and greater stability during slurry solidification.The deformation and displacement of the tunnel due to compacted grouting results in a smaller range of influence,with enhanced stability during slurry solidification.During fracture grouting,slurry is distributes flatter in stratum,thicker near the grouting pipe outlet but thinner at the diffusion edge,with uncertain development direction of the slurry vein and irregular slurry shape.Compaction grouting slurry approximates a sphere,extending along the direction of the grouting pipe.Compaction grouting provides more effective stratum compaction and better controllability.Thus,for controlling excessive cross-sectional deformation over the limit of remediation,tunnel rectification,or tunnel lifting where additional earth pressure is required,a grouting pipe capsule bag is recommended at the pipe outlet.关键词
盾构隧道/侧部注浆/浆液扩散模式/劈裂注浆/挤密注浆/模型试验/受荷变形Key words
Shield tunnel/Lateral grouting/Slurry diffusion mode/Fracture grouting/Compaction grouting/Model test/Load-induced deformation分类
交通工程引用本文复制引用
黄大维,陈后宏,余珏,赵梽錡..侧部浆液扩散模式对盾构隧道受荷变形影响试验研究[J].中国铁道科学,2025,46(6):87-98,12.基金项目
国家自然科学基金资助项目(52378398) （52378398）
江西省主要学科学术和技术带头人领军人才项目(20232BCJ22009) （20232BCJ22009）
江西省自然科学基金资助项目(20242BAB26077) （20242BAB26077）
