长江科学院院报2019，Vol.36Issue(12)：83-90,8.DOI:10.11988/ckyyb.20180733
速凝浆液岩体倾斜裂隙注浆扩散模型研究
Grouting Diffusion Model of Quick Setting Slurry in Dip Crack Rock Masses
摘要
Abstract
With horizontal cracks as the premise, conventional models of penetrative grouting diffusion do not reflect the impact of the occurrence of rock mass cracks on the grouting diffusion mechanism. In view of this, a theoretical diffusion model of grouting in dip cracks at constant grouting rate was established in consideration of the uneven spatial distribution of viscosity based on the theory of fluid mechanics and equivalent hydraulic aperture of rough walled cracks. Quick setting double slurry ( cement-sodium silicate slurry) , commonly used in engineering geolog-ical hazard treatment, was regarded as Bingham liquid with time-dependent behavior of viscosity in static water en-vironment and was chosen as the grouting material. The dead-weight of grouting slurry itself was taken into consid-eration, Furthermore, the space-time distribution equation of viscosity and pressure in the diffusion region of slurry was derived. And the relations of grouting pressure versus grouting time and grouting diffusion distance were quanti-tatively determined. Finally, the slurry diffusion characteristics in the presence of different occurrence of cracks at constant grouting rate was studied by means of laboratory tests and finite element analysis procedures. Comparison between numerical simulation results and theoretical calculations verified the validity and rationality of the theoreti- cal model. The results may be constructive to the determination of grouting parameters of quick setting slurry in practical engineering.关键词
速凝浆液/倾斜裂隙/注浆/扩散模型/黏度时变性/注浆参数Key words
quick setting slurry/dip crack/grouting/diffusion model/time-dependent behavior of viscosity/grou-ting parameters分类
建筑与水利引用本文复制引用
裴启涛,丁秀丽,黄书岭,景锋..速凝浆液岩体倾斜裂隙注浆扩散模型研究[J].长江科学院院报,2019,36(12):83-90,8.基金项目
国家重点研发计划项目(2016YFC0401802) （2016YFC0401802）
国家自然科学基金资助项目(51539002, 51609018) （51539002, 51609018）
中央级公益性科研院所基本科研业务费项目(CKSF2017030/YT, CKSF2017054/YT) （CKSF2017030/YT, CKSF2017054/YT）
