Abstract
Seepage prevention and reinforcement of sandy soft soil layer are the important subjects in geotechnical engineering. A set of constant pressure permeable grouting device has been developed to study the diffusion rule of new permeable polymer in sandy soil layer. Based on the orthogonal experimental design, the effects of grouting pressure, grouting time, sand moisture content and sand porosity on the diffusion of new permeable polymer in sand are studied. Through the establishment of spatial coordinate system, the diffusion range of permeable polymer slurry is studied. The experimental results show that: the main and secondary order affecting the diffusion range of permeable polymer in the X-axis and Y-axis are sand porosity, grouting pressure, grouting time, and sand moisture content. The primary and secondary orders of influencing factors on the Z-axis diffusion range of permeable polymer are sand porosity, grouting time, grouting pressure, and sand moisture content. The effects of grouting pressure, grouting time, sand layer porosity on permeable polymer diffusion and the effect of permeable polymer on soil displacement during diffusion are studied by COMSOL numerical analysis software. The results of numerical analysis show that the grouting pressure, grouting time, and porosity of sand layer promote the diffusion of permeable polymer. The slight deformation of soil mass and small disturbance to soil layer can be caused by slurry during diffusion process. A function model between slurry diffusion range and grouting parameters are established, and verified by numerical simulation for comparison. The results show that the numerical simulation values of permeable polymer grouting results in the three comparison scenarios A1, A2 and A3 are greater than the theoretical calculation values, and the difference between them is not significant. The difference between the calculated value and the theoretical value of the three comparison schemes are 6.3%, 11.7% and 7.39%, respectively.
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Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
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Acknowledgements
The work present in this paper was supported by National Key Research and Development Program of China (2019YFC1510803-2); National Natural Science Foundation of China (Grant No. 52178369; 52109140); Key Projects of High Schools of Henan province (20A560021); Natural Science Foundation of Henan Province (202300410424); Youth Talent Promotion Project of Henan Province (2021HYTP016); Key Specialized Research and Development Breakthrough in Henan Province (212102310977); China Postdoctoral Science Foundation (2019M662533). These financial supports are gratefully acknowledged.
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Wang, Y., Yu, B., Wan, Y. et al. Experimental Investigation and Numerical Verification on Diffusion of Permeable Polymers in Sandy Soils with Considering Grouting Parameters. Int J Civ Eng 21, 617–632 (2023). https://doi.org/10.1007/s40999-022-00780-7
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DOI: https://doi.org/10.1007/s40999-022-00780-7