Abstract
This study proposes a formation and stability of curtain method to investigate the advance-curtain grouting in roadways on an engineering scale, which includes the investigation of the curtain formation and stability under dynamic water conditions. Firstly, the two-phase flow mathematical equations and the simplified model are abstracted from the engineering problems faced by Gushan Iron Mine in China. Then, the simplified model is studied by model test and numerical simulation, respectively, to analyze whether the two results have the same trend, so as to verify the rationality of the numerical simulation method. Then, an engineering scale model is established to investigate the curtain formation law of advance-curtain grouting. After that, the curtain body model can be established by setting out the slurry diffusion profile, and its stability in dynamic water can be studied based on the fluid–solid coupling equations. The results show that the slurry diffusion law in the simplified model has good consistency in numerical simulation and model test, and it is reliable to use this numerical method to carry out engineering scale simulation. The formation of grouting curtain is jointly affected by the water velocity and grouting rate. And the grouting curtain volume is negatively correlated with the water velocity and positively correlated with the grouting rate. Furthermore, the counter-water side of the grouting curtain is the weakest part, which plays an important role in controlling the stability of the whole curtain body.
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CX contributed to investigation, methodology, formal analysis, validation and writing original draft. LH contributed to supervision, project administration, funding acquisition, conceptualization, writing reviewing and editing.
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Xu, C., Han, L. Engineering scale Modeling of Advance-Curtain Grouting in Roadways Under Dynamic Water Conditions: The Formation and Stability of Curtain Method. Iran J Sci Technol Trans Civ Eng 47, 3071–3081 (2023). https://doi.org/10.1007/s40996-023-01059-0
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DOI: https://doi.org/10.1007/s40996-023-01059-0