岩土工程学报2026，Vol.48Issue(2)：259-269,11.DOI:10.11779/CJGE20240821
径向振动作用下浆液在饱和砂土中扩散特性现场试验研究
Field test study on diffusion characteristics of grout in saturated sand under radial vibration
摘要
Abstract
Current vibration grouting experiments typically utilize axial vibration methods,concentrating the vibration energy primarily at the end of the drill rod,thereby causing minimal radial disturbance to the surrounding soil.To address this issue,we develop a vibration grouting test system with adjustable frequency and radial excitation capabilities.Using this device,we conduct vibration grouting experiments on saturated sandy soil under various excitation conditions,analyzing the effects of vibration frequency and injection hole depth on the diffusion performance of geopolymer slurry in saturated sandy soil.The results indicate that under constant maximum grouting pressure,the width of the grout consolidation body significantly increases with vibration frequency.Compared to static grouting,the application of vibrational excitation at frequencies of 10 Hz,30 Hz,and 50 Hz results in an increase in consolidated body length by 1%,20%,and 26%,respectively.Additionally,the width of the consolidated body increases by 80%,113%,and 187%.As the depth of the injection hole increases,the width of the consolidation body gradually decreases.The grouting pressure exhibits a three-stage change over time:a slow rise,a rapid increase,and a sharp escalation.With increasing vibration frequency,the rate of pressure increases in each stage decreased,leading to longer grouting duration and increased total grout volume.Conversely,the depth of the injection hole has the opposite effect on these indicators.At different times,the additional soil pressure at each measurement point increases with vibration frequency and decreases with injection hole depth.The measurement point closest to the injection hole horizontally records the highest additional soil pressure.Centered on this point,the additional soil pressure at lower vertical measurement points is less than at upper symmetric positions.关键词
振动注浆/径向振动/扩散性能/现场试验Key words
vibration grouting/radial vibration/diffusion performance/field test分类
建筑与水利引用本文复制引用
李晓龙,陈永利,刘小锋,钟燕辉,张蓓,王复明..径向振动作用下浆液在饱和砂土中扩散特性现场试验研究[J].岩土工程学报,2026,48(2):259-269,11.基金项目
国家自然科学基金项目(52178401) （52178401）
河南高校科技创新团队支持计划项目(23IRTSTHN014) （23IRTSTHN014）
中原英才计划项目(234200510014) （234200510014）
河南省2021 年水利科技攻关项目(2021-72)This work was supported by National Natural Science Foundation of China(Grant No.52178401),Science and Technology Innovation Team Support Program for Henan Universities(Grant No.23IRTSTHN014),Central Plains Talent Program in China(Grant No.234200510014),and Water Conservancy Science and Technology Research Projects in Henan Province(Grant No.2021-72). （2021-72）
