Research Article

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

Figure 4

Realization of controllable grouting of cement-silicate grout in the loose rock mass.
(a) Heap grouting test
(b) Grouting measurement in the on-site construction
(c) Vertical diffusion distance of grout in the loose rock mass