Column penetration grouting mechanism for power-law fluids considering tortuosity effect of porous media

被引：0
|
作者：
Yang Z. [1 ]
Lu J. [1 ]
Wang Y. [1 ]
Zhang Z. [1 ]
Yang Y. [1 ]
Zhu Y. [1 ,2 ]
Zhang J. [3 ]
Guo Y. [4 ]
Chen X. [5 ]
机构：
[1] Faculty of Public Safety and Emergency Management, Kunming University of Science and Technology, Kunming
[2] Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu
[3] Yunnan Institute of Geological Environment Monitoring, Kunming
[4] Kunming Survey, Design and Research Institute Co., Ltd. of CREEC, Kunming
[5] The Third Engineering Co., Ltd. of China Railway Seventh Bureau Group Corporation, Xi'an
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2021年 / 40卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Column diffusion; Penetration grouting mechanism; Porous media; Power-law fluid; Seepage mechanics; Tortuosity effect;
D O I：
10.13722/j.cnki.jrme.2020.0627
中图分类号：
学科分类号：
摘要：
The tortuosity effect of porous media has an important influence on penetration diffusion and grouting effect. A seepage equation of power-law fluid considering tortuosity effect of porous media was established, and the column penetration grouting mechanism was analyzed. Based on computer programming technologies, a three-dimensional numerical simulation program for column penetration grouting of power-law fluid considering tortuosity effect of porous media was developed by using secondary development with COMSOL multiphysics platform and Darcy's law, and numerical simulation of penetration grouting process of power-law cement grouts with different water-cement-ratios into gravel soils was carried out. Finally, comparisons among theoretical analysis, model experiments and numerical simulations were performed. Research results show that theoretical calculation values and numerical simulation values of the diffusion radius considering the tortuosity effect of porous media are closer to the model experiment values than those without considering the tortuosity effect, indicating that the developed equation better reflects column penetration grouting diffusion laws of power-law fluid into porous media. Research achievements can provide theoretical support and technical guidance for design and construction of practical grouting engineering in porous media stratums. © 2021, Science Press. All right reserved.
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页码：410 / 418
页数：8
相关论文
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