Grout diffusion model in porous media considering the variation in viscosity with time. (January 2019)

• Record Type: Journal Article
• Authors: Hou, Fujin; Sun, Keguo; Wu, Qingdong; Xu, Weiping; Ren, Sijia
• Is Part Of: Advances in mechanical engineering. Volume 11:Number 1(2019)
• Publication Date: 2019-01
• Subjects: Time variation in viscosity -- Bingham grouts -- porous media -- assembled model -- grout diffusion; Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1177/1687814018819890
• Languages: English
• ISSNs: 1687-8132

Abstract

Grouting engineering is widely used in water plugging for geotechnical engineering. However, grout is usually treated as a Newton fluid and the viscosity is considered unchangeable over time during the grouting design process. This study proposes a grout diffusion model for porous media that considers the variation in viscosity with time. The flow equation is derived for a single smooth tubule. Then, the microequation of Bingham grout flowing in porous media is obtained. Finally, an assembled diffusion model of spheres and cylinders for grouting using a perforated pipe is proposed. A numerical simulation method is used to verify the grout diffusion mode. The research results can guide grouting design and practical grouting engineering in water plugging and reinforcement.