华中科技大学学报（自然科学版）2024，Vol.52Issue(10)：20-26,7.DOI:10.13245/j.hust.240297
浆液扩散模式对地层附加土压力影响试验研究
Experimental study on influence of slurry diffusion mode on additional earth pressure of formation
摘要
Abstract
In response to the problem of unclear factors affecting the formation of additional soil pressure during the deformation recovery grouting process of existing shield tunnels,grouting unit tests were conducted using different water content slurry and grouting methods,and the additional soil pressure and slurry diffusion morphology generated by grouting were analyzed.Experimental results show that when direct grouting is used,the water content of the slurry has a significant impact on its diffusion mode,which in turn affects the additional soil pressure caused by grouting in the formation.The lower the water content of the slurry,the poorer its fluidity,and the lower the possibility of slurry running during injection into the formation,which is more conducive to the formation of additional soil pressure during formation grouting.When using the bag grouting method,the additional soil pressure in the formation increases steadily,and the overall additional soil pressure generated by injecting the same volume of grout is greater.Under the conditions of meeting the fluidity and injectability of the slurry inside the grouting pipe,it is recommended to reduce the water content of the slurry during the deformation recovery grouting process of shield tunnels to improve the viscosity of the slurry,and consider using the bag method for grouting.关键词
盾构隧道/恢复注浆/附加土压力/单元体/浆液扩散Key words
shield tunnel/resume grouting/additional earth pressure/unit body/slurry diffusion分类
建筑与水利引用本文复制引用
黄大维,刘家璇,徐长节,罗仲睿..浆液扩散模式对地层附加土压力影响试验研究[J].华中科技大学学报（自然科学版）,2024,52(10):20-26,7.基金项目
国家自然科学基金资助项目(52378398,52078213,52238009) （52378398,52078213,52238009）
江西省主要学科学术和技术带头人领军人才项目(20232BCJ22009). （20232BCJ22009）
