Papers by Author: Yi Wu He

Abstract: In this paper, we had a field test study in mud-pumping of the subgrade. During the experiment, from the process and the parameters, and based on the laboratory tests, a series of tests on the soil at the mud-pumping of the subgrade have been done before and after the improvement of the physical parameters.Studies show that the adopted materials, processes and parameters to be successful.

Abstract: Random medium theory is introduced in this paper. It derived the vertical and horizontal displacement of the surface subsidence with the random medium theory, which caused by excavation, and integrated the overall surface displacement. It was verified with practical examples. The results can provide technical information for the excavation and supporting.

Abstract: Based on the assumptions:(1)The grouted soil is homogeneous and isotropic;(2)Slurry is Newtonian;(3)Slurry be injected into the strata from the bottom of grouting pipe;(4)In the soil slurry was spread in the ball shape, theoretical formula of the column (ball) expansion of the pressure grouting is derived , and described the FH3’s curing mechanism. This research could provide theoretical guidance for the implementation of grouting.