Test of the influence of dynamic water grouting diffusion radius of fractures in rock

Authors

GU Shuancheng, School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
SUN Guanlin, School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, ChinaFollow
SU Peili, School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
LI Jinhua, School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

Abstract

Water-cement ratio and grouting pressure are the key factors in the design of hydrodynamic grouting. In this paper, based on the self-designed simulated fissure hydrodynamic grouting indoor test platform, the dynamic water grouting test was carried out, the diffusion mode of the slurry in fractures was discussed. The relationship among the diffusion radius of pure cement slurry, the grouting pressure and water-cement ratio was analyzed. The experimental results were verified by computational fluid dynamics software. The results show that the diffusion mode of the slurry is partition diffusion. When the grouting pressure is constant, the diffusion radius is inversely proportional to the water-cement ratio. When the water-cement ratio is constant, the diffusion radius is proportional to the grouting pressure.

Keywords

dynamic water grouting, single fracture, laboratory test, numerical simulation, diffusion radius

DOI

10.3969/j.issn.1001-1986.2019.05.020

Recommended Citation

GU Shuancheng, SUN Guanlin, SU Peili, et al. (2019) "Test of the influence of dynamic water grouting diffusion radius of fractures in rock," Coal Geology & Exploration: Vol. 47: Iss. 5, Article 21.
DOI: 10.3969/j.issn.1001-1986.2019.05.020
Available at: https://cge.researchcommons.org/journal/vol47/iss5/21

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