岩土力学2026，Vol.47Issue(1)：255-266,12.DOI:10.16285/j.rsm.2025.0141
注浆影响下隧道渗流场及最小覆土厚度修正研究
Correction of tunnel seepage field and the minimum overburden thickness under the influence of grouting
摘要
Abstract
The minimum tunnel overburden thickness is a critical parameter in underwater tunnel construction.To calculate the minimum tunnel overburden thickness considering the influence of grouting,an analytical solution for the seepage field of an underwater tunnel influenced by grouting is derived using the mirror method and seepage mechanics theory.The solution is refined using the Japanese minimum seepage method.The accuracy of the theoretical solution is verified through formula simplification and laboratory simulation tests.Using this solution,this paper investigates the influence of parameters including the relative permeability coefficient of grouting,grouting range,and water depth.The findings show that,at different depth ratios,water pressure outside the tunnel lining increases linearly with head height.A lower depth ratio increases the sensitivity of external water pressure to water depth variations.Improving the permeability of the grouting ring reduces tunnel seepage more effectively than enlarging the grouting range,especially within a range of 1 m to 3 m,where the effect is most pronounced.In the absence of grouting,the tunnel overburden thickness is highly sensitive to changes in water depth,and enhancing the permeability of the grouting material can significantly mitigate the impact of water depth.For high-risk tunnels,high-permeability grouting materials with a thickness exceeding 5 m are recommended.In conventional projects,a grouting range of 1–3 m provides an optimal balance between safety and cost.关键词
隧道工程/渗流场/覆土厚度/注浆圈/室内模型试验Key words
tunneling/seepage field/overburden thickness/grouting ring/indoor model tests分类
建筑与水利引用本文复制引用
贾宝新,袁庆雷..注浆影响下隧道渗流场及最小覆土厚度修正研究[J].岩土力学,2026,47(1):255-266,12.基金项目
辽宁工程技术大学学科创新团队资助项目(No.LNTU20TD08). This work was supported by the Project of Innovation Team of Liaoning Technical University(LNTU20TD08). （No.LNTU20TD08）
