Analysis of Factors Affecting Sleeve Valve Pipe Grouting in Sand Layers

The uniform design experiment method was adopted to develop a grouting test plan. By conducting a simulated sleeve valve pipe grouting experiment, the impact of grouting pressure and water-cement ratio on the spreading of grout in sand layers can be analyzed: Under the pressure of grouting, the dominant position of the splitting effect combined with the permeation effect is filling the grout-receiving soil layer in multiple forms and coexisting with the permeation flow portion, which is well bonded to the grout-receiving soil layer. The nonlinear relationship between the diffusion radius of the slurry, grouting pressure, and water-cement ratio during the grouting process is obtained by employing regression analysis for test data design.