岩土力学2026，Vol.47Issue(1)：337-348,12.DOI:10.16285/j.rsm.2025.0115
岩石正交裂隙内浆液驱替动水机制研究
Mechanism of grout-flowing water displacement in orthogonal rock fractures
摘要
Abstract
Fractures are the primary pathways for fluid flow in rock masses,and they commonly occur as interconnected networks.Rock grouting is a process in which flowing water is displaced by grout.Since rock fracture networks are formed by a large number of crossed fractures,it is of great significance to study the displacement of grouts under the action of flowing water for designing effective grouting schemes.In this study,a rough orthogonal fracture model was established using three-dimensional reconstruction,and a laboratory visualization grouting test was conducted.We developed a numerical orthogonal fracture model using COMSOL Multiphysics to investigate the effects of fracture roughness,the grout-to-water flow rate ratio,and inlet–outlet configurations on the grout–water displacement process.After validation,the experimental and simulation results suggest that grout primarily fills well-connected channels.Grouting pressure rises rapidly after injection and stabilizes once most water is displaced.Efficient mixing at intersections yields more consistent grout volume fractions across branches.Displacement efficiency is governed by the dominant flow channels.If the conventional parallel-plate model is used,which ignores fracture surface roughness,the grouting pressure may be underestimated by more than 30%.关键词
交叉裂隙/注浆/Herschel-Bulkley模型/动水/驱替Key words
crossed-fracture/grouting/Herschel-Bulkley model/flowing water/displacement分类
建筑与水利引用本文复制引用
李博,唐敏,刘蓉蓉,谢雨施,邹良超,石振明..岩石正交裂隙内浆液驱替动水机制研究[J].岩土力学,2026,47(1):337-348,12.基金项目
国家自然科学基金项目(No.42077252,No.42377162) （No.42077252,No.42377162）
中央高校基本科研业务费(No.22120230311). This work was supported by the National Natural Science Foundation of China(42077252,42377162)and the Fundamental Research Funds for the Central Universities,China(22120230311). （No.22120230311）
