Study on Microscopic Roadbed Grouting Mechanism Based on CFD-DEM Coupling Algorithm

Figure 5

Damage range of contact keys under different grouting pressures. (a) The damage of the overall contact bond under different pressures (0.1 MPa, 0.15 MPa, 0.2 MPa, 0.25 MPa, 0.3 MPa, 0.4 MPa, and 0.5 MPa). (b) Destruction of plane contact keys of grouting holes under different pressures (0.1 MPa, 0.15 MPa, 0.2 MPa, 0.25 MPa, 0.3 MPa, 0.4 MPa, and 0.5 MPa).

(a)

(b)