DataVXApplied SciencesPaper
journal article·2022-05-25Open access

Column Penetration and Diffusion Mechanism of Bingham Fluid Considering Displacement Effect

Zhiquan Yang, Dan Zhang, Chaoyue Li, Zhiwei Zhang, Yingyan Zhu, Yi Yang, Na He, Xianfu Bai, Wenfei Xi, Deming He, Yuchi Ding, Meng Zhou

Applied Sciences· Volume 12· Issue 11
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Source abstract

Abstract

The diffusion progress of grout is hindered by groundwater, which means the diffusion distance cannot reach the designed values required in engineering for water plugging or reinforcement. In this study, based on the generalized Darcy’s law and the continuity equation of steady column penetration, a column diffusion mechanism for Bingham fluid, considering the displacement effect of grout on groundwater, is proposed. This diffusion mechanism is then validated by the penetration grouting experiments that have been previously performed. The influences of the grouting pressure, groundwater pressure, water–cement ratio and penetration coefficient of porous media on the diffusion radius are analyzed. Based on the Comsol Multiphysics platform, a three-dimensional numerical simulation program for this mechanism is developed using computer programming technology. Numerical simulations of the penetration and diffusion morphology of Bingham cement grout in porous media are then carried out. The results show that the theoretical calculation values of diffusion radius obtained from this mechanism are closer to the experimental values than those obtained from the column penetration grouting theory of Bingham fluid, without considering the displacement effect. The results of this study can provide theoretical support for practical grouting engineering.
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Research context

Composites

OpenAlex topics: Grouting, Rheology, and Soil Mechanics · Drilling and Well Engineering · Dam Engineering and Safety

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Faculty of Public Safety and Emergency Management, Kunming University of Science and Technology, Kunming 650093, China

Key Laboratory of Geological Disaster Risk Prevention and Control and Emergency Disaster Reduction of Ministry of Emergency Management of the People’s Republic of China, Kunming 650093, China

Key Laboratory of Early Rapid Identification, Prevention and Control of Geological Diseases in Traffic Coridor of High Intensity Earthquake Mountainous Area of Yunnan Province, Kunming 650093, China

Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China

Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China

College of Civil Engineering, Henan University of Technology, Jiaozuo 454000, China

Yunnan Seismological Bureau, Kunming Institute of Earthquake Prediction, Kunming 650093, China

Department of Geography, Yunnan Normal University, Kunming 650500, China

Yunnan Wenshan Aluminum Co., Ltd., Wenshan 663000, China

Funding

National Natural Science Foundation of China · Muhammad Asif Khan academician workstation of Yunnan Province · Key R&D Program of Yunnan Province · General Program of basic research plan of Yunnan Province

References (34)

Show source-provided references
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