中国水利水电科学研究院学报（中英文）2026，Vol.24Issue(5)：567-577,11.DOI:10.3724/j.jiwhr.20260034
覆盖层多路径循环劈裂灌浆技术研究
Research on multi-path cyclic splitting grouting technology in overburden deposits
杨晓东 1裴晓龙 1符平 2赵卫全2
作者信息
- 1. 中国水利水电科学研究院,北京 100038
- 2. 中国水利水电科学研究院,北京 100038||北京中水科工程集团有限公司,北京 100048
- 折叠
摘要
Abstract
Traditional splitting grouting technology suffers from single-path slurry diffusion and uneven reinforcement in overburden deposits.In this study,a multi-path cyclic splitting grouting technique is proposed and investigated through theoretical analysis and field experiments.Based on elastic and fracture mechanics,the formation mechanism of multi-path splitting is revealed:after each splitting event,pressure filtration consolidation of the grout and redistri-bution of in-situ stress jointly act to increase the re-initiation resistance of existing cracks,thereby promoting the ini-tiation of new splitting paths and forming a multi-directional grout vein network through repeated cycles.Experimen-tal results demonstrate that more than six effective splitting cycles were achieved,the splitting pressure increases to 1.5-3 times the initial value,the post-grouting permeability is reduced to within 1 Lu,and the density and homogene-ity of the formation are significantly improved.The proposed technique provides a promising approach for achieving uniform reinforcement of overburden deposits and demonstrates strong potential for engineering applications.关键词
覆盖层/劈裂灌浆/多路径循环劈裂/压滤固结/加固效果Key words
overburden deposits/splitting grouting/multi-path cyclic splitting/filter-pressing consolidation/rein-forcement effect分类
建筑与水利引用本文复制引用
杨晓东,裴晓龙,符平,赵卫全..覆盖层多路径循环劈裂灌浆技术研究[J].中国水利水电科学研究院学报（中英文）,2026,24(5):567-577,11.
