CT理论与应用研究2025，Vol.34Issue(2)：245-254,10.DOI:10.15953/j.ctta.2023.204
隧道仰拱质量无损检测震源因素研究
Study on Nondestructive Testing of Source Factors of Tunnel Arch Quality
摘要
Abstract
To obtain high-energy,high-frequency,and wide-band seismic signals in tunnel arch quality testing,the influence on seismic waves of the mass,velocity,and contact area of the hammer source was studied based on a finite element simulation.The results show that with the increase in mass of the hammer,the amplitude of the hammer signal increases linearly,the main frequency decreases,and the frequency band width increases significantly.With the increase in the instantaneous velocity of the hammering,the amplitude of the hammer signal increases linearly,the main frequency increases slightly,and the frequency bandwidth does not change significantly.With the increase in the contact area between the hammer and the ground,the amplitude of the hammer signal increases,and the main frequency and bandwidth remain basically unchanged,but the energy of the high-frequency component is attenuated and the bandwidth is narrowed.According to the above research,a small integrated round-head hammer was designed and non-destructive testing experiments were carried out,which showed that the hammer could obtain high-quality seismic signals and realize the detection and imaging of the tunnel inverted arch bottom interface,and the imaging results were basically consistent with the actual construction situation.In this work,the study of the seismic source is extended to the field of tunnel arches,and it can provide a reference for nondestructive testing of tunnel arches.关键词
隧道仰拱/地震法/锤击震源/有限元仿真Key words
tunnel arches/seismic method/hammering the source/finite element simulation分类
天文与地球科学引用本文复制引用
李秀,罗昊,邓飞,郑兴军,周桃生,郑佳..隧道仰拱质量无损检测震源因素研究[J].CT理论与应用研究,2025,34(2):245-254,10.基金项目
国家博士后基金(基于多算法融合的工业CT空心涡轮叶片壁厚检测技术研究(2021M693769)) （基于多算法融合的工业CT空心涡轮叶片壁厚检测技术研究(2021M693769）
蜀道城乡集团自立科研项目(基于自动冲击震源的地震法隧道仰拱质量检测系统研发(CX202301)) （基于自动冲击震源的地震法隧道仰拱质量检测系统研发(CX202301）
成都市重点研发支撑计划(隧道高温热害精准超前预判技术研究(2022YF0800001GX)). （隧道高温热害精准超前预判技术研究(2022YF0800001GX）
