Research Article

Plugging and Its Stability Evaluation for the Ore Pass in the Nonempty Condition Based on Controllable Grouting of Cement-Sodium Silicate Grout

Table 1

The physical and mechanical parameters to be used.

Rock massDensity (kg·m-3)Elastic modulus (GPa)Poisson ratioFriction angle (°)Cohesive force (MPa)Tension strength (MPa)

Surrounding rocks26605.160.2542.71.930.29
Replacement of gravels24000.190.2540.500
Grouting stone body20001.000.3036.52.250.10