水利学报2026，Vol.57Issue(8)：1246-1258,13.DOI:10.3724/j.slxb.20250732
倾斜裂隙负压抽吸-动水注浆扩散机制研究
Diffusion mechanism of negative pressure induced grouting in inclined fractures under flowing water conditions
摘要
Abstract
To address the issue of grouting repair of concrete anti-seepage wall fractures under flowing water condi-tions,it is necessary to investigate the diffusion mechanism of negative pressure suction grouting of inclined fractures.This study utilizes a self-developed visualized test apparatus for inclined-fracture grouting suction under flowing water.It focuses on analyzing the effects of fracture inclination angle,water flow rate and grouting pressure on grout diffusion,as well as suction's enhancement effect.By establishing a diffusion model for grouting with suction in frac-tures under flowing water,calculation formulas for counter-flow diffusion distance,lateral diffusion distance and dif-fusion area were derived.The results show that the grout diffusion area with suction is increased by up to 48％for a fracture inclination angle of 0°compared to that without suction.Grout diffusion presents a U-shape under combined action of flowing water and suction.An increase in the inclination angle reduces the diffusion area,while an increase in grouting pressure expands it notably.Negative pressure suction effectively alleviates flowing water's adverse impacts on grouting.The maximum relative error between the theoretically calculated diffusion area from the model and the actual area does not exceed 12.1％,with an average relative error of 4.2％.This model can describe the grout diffusion patterns providing technical support for the grouting repair of anti-seepage wall fracture under flowing water conditions with suction.关键词
负压抽吸/倾斜裂隙/动水注浆/浆液扩散面积/浆液扩散距离Key words
negative pressure suction/inclined fracture/grouting under flowing water/grout diffusion area/grout diffusion distance分类
建筑与水利引用本文复制引用
刘杰,李健,王瑞红,黎照,程王润,杨渝南..倾斜裂隙负压抽吸-动水注浆扩散机制研究[J].水利学报,2026,57(8):1246-1258,13.基金项目
国家重点研发计划项目(2023***3106500) （2023***3106500）
国家自然科学基金项目(52079071) （52079071）
国家重点研发计划课题(2023YFC3106504) （2023YFC3106504）
