Abstract
This study intends to study the properties of chemical grouting materials in civil engineering. For this objective, a flat fracture model under the condition of dynamic water is established, and on the basis of the model, theoretical derivation and the injectivity analysis based on Fluent is made, so as to study the flow characteristics of the slurry, as a supplement to the grouting theory. The results show that the diffusion form of slurry is wide before and narrow behind, which is similar to an ellipse. Groundwater flow is large, grout diffusion area will be narrower and the slurry is more easily diluted, which is not conducive to water grouting. The greater the grouting pressure is, the greater the degree of open fracture will be, the smaller the viscosity is, and the smaller the groundwater pressure is. All of these are beneficial for the slurry diffusion. The grouting pressure is a constant. With the increase of grouting time, the flow velocity of the slurry front decreases and it is gradient. The grouting pressure at the grouting hole is the largest, and with the slurry diffusion, the slurry pressure decreases and decreases gradiently. In a word, the grouting method can well test the properties of chemical grouting materials, which has great practical value.
