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

GU Shuancheng; SUN Guanlin; SU Peili; LI Jinhua

doi:10.3969/j.issn.1001-1986.2019.05.020

Volume 47 Issue 5

Oct. 2019

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COAL GEOLOGY & EXPLORATION > 2019 > 47(5): 144-149. > DOI: 10.3969/j.issn.1001-1986.2019.05.020

GU Shuancheng, SUN Guanlin, SU Peili, LI Jinhua. Test of the influence of dynamic water grouting diffusion radius of fractures in rock[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(5): 144-149. DOI: 10.3969/j.issn.1001-1986.2019.05.020

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

School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

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National Natural Science Foundation of China(51508462)

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Received Date: November 21, 2018
Published Date: October 24, 2019

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Abstract

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

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