辽宁工程技术大学学报（自然科学版）2024，Vol.43Issue(6)：671-681,11.DOI:10.11956/j.issn.1008-0562.20230325
改性超细水泥基注浆材料裂隙注浆扩散规律研究
Study on crack grouting diffusion law of modified ultrafine cement-based grouting material
摘要
Abstract
Aiming at the problem of poor performance of grouting materials,high-performance modified ultrafine cement-based grouting materials were prepared.In order to explore the diffusion law of modified ultrafine cement-based grouting materials in cracks,a two-dimensional symmetric model under static water conditions and a three-dimensional crack plate model under dynamic water conditions were established and numerically simulated with smooth plate cracks and grouting materials as research objects.The slurry diffusion equation was derived,and the diffusion peak surface and pressure field variation law of slurry flow in cracks under different grouting rates were analyzed.The results show that under the condition of still water,the slurry pressure loss increases with the increase of diffusion distance.Under the condition of dynamic water,the slurry pressure loss is positively correlated with the slurry viscosity,quadratic function relationship with the diffusion distance,and negatively correlated with time,yield stress and fracture opening.When the water head pressure is constant,the greater the grouting rate,the greater the slurry diffusion radius,the greater the pressure field,the better the grouting plugging effect;the amplitude of the pressure attenuation of the slurry changes the most in the direction of the water and the least in the direction of the water.The research results provide a theoretical reference for on-site grouting construction technology.关键词
裂隙注浆/Bingham流体/改性注浆材料/浆液扩散/压强场Key words
crack grouting/Bingham fluid/modified grouting material/slurry diffusion/pressure field分类
建筑与水利引用本文复制引用
周军霞,张学奇,牛佳斌,张玉,郭文敬,杨瑾怡..改性超细水泥基注浆材料裂隙注浆扩散规律研究[J].辽宁工程技术大学学报（自然科学版）,2024,43(6):671-681,11.基金项目
辽宁省教育厅基本科研项目(LJ212410147062) （LJ212410147062）
中建股份科技研发计划资助课题(CSCEC-2022-Q-53) （CSCEC-2022-Q-53）
中建六局科技研发计划资助课题(CSCEC6B-2022-Z-14) （CSCEC6B-2022-Z-14）
