东南大学学报（自然科学版）2025，Vol.55Issue(1)：213-221,9.DOI:10.3969/j.issn.1001-0505.2025.01.024
基于冲击回波法的盾构隧道壁后注浆质量检测研究
Research on back-fill grouting quality detection of shield tunnel based on impact-echo method
摘要
Abstract
In order to improve the quality of back-fill grouting in shield tunnels,a study on the quality detec-tion of back-fill grouting in shield tunnels based on the impact-echo method was conducted.The detection method of the back-fill grouting state and the modified formula for back-fill grouting layer thickness were pro-posed.Considering the solidification characteristics of back-fill grouting and the propagation law of P-wave at the interface of segment-back-fill grouting layer,the optimal detection timing and detection scheme under dif-ferent strata of back-fill grouting were proposed.The feasibility and accuracy of this method were verified by model tests and field tests.The results show that the P-wave is mainly converted to transmission P-wave at the interface of segment-back-fill grouting layer with the increase of slurry strength.As the condensation time in-creases to 570 min,the interpreted thickness value of the back-fill grouting layer tends to be stable.The calcu-lation precision and accuracy are centimeter level and 95%,respectively.Combined with the tunnelling effi-ciency of different strata,the optimal detection timing is determined to be 10 to 14 rings after grouting.The re-search results can provide theoretical basis and technical support for the rapid and accurate detection of back-fill grouting quality in shield tunnels.关键词
盾构隧道/壁后注浆/冲击回波法/质量检测/注浆厚度/工程应用Key words
shield tunnel/back-fill grouting/impact-echo method/quality detection/grouting thickness/en-gineering application分类
建筑与水利引用本文复制引用
陈迪杨,李利平,王旌,巴兴之,房忠栋,张延欢..基于冲击回波法的盾构隧道壁后注浆质量检测研究[J].东南大学学报（自然科学版）,2025,55(1):213-221,9.基金项目
国家重点研发计划资助项目(2023YFB2603604) （2023YFB2603604）
泰山学者青年专家资助项目(tsqn202306328) （tsqn202306328）
山东省优秀青年基金资助项目(ZR2022YQ56) （ZR2022YQ56）
国家自然科学基金面上资助项目(52378403) （52378403）
山东省自然科学基金面上资助项目(ZR2023ME235) （ZR2023ME235）
山东省住房和城乡建设科技计划资助项目(2020-Z2-1). （2020-Z2-1）
