The filtration effect has an important influence on the fracturing grouting diffusion process in sand. At present, there is no reasonable fracturing grouting theoryfully considered the filtration effect. In this paper, the filtration effect was described by the one-dimensional filtration model. A theory model of fracturing grouting diffusion in sand was established considering the plate grouting diffusion model and the one-dimensional filtration model. Equations of grout diffusion were further derived. Compared to the model without considering filtration effects, the influence mechanisms of the filtration effects on grout diffusion were revealed. The process of fracturing grouting diffusion in sand was stimulated with ALE finite element methods dynamically. The numerical solution was consistent with the theoretical solution. The field examination of the fracturing grouting diffusion in sand was carried out. The results proved thatactual length ofgrout veins were similar with the numerical results and theoretical calculations，which verified the rationality of the numerical model and the theoretical model.
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2017, Vol. 36 
