Experimental Study and Application of Inorganic Solidified Foam Filling Material for Coal Mines

Figure 11

ZMJ-F grouting system: (a) foam, (b) foam slurry, (c) solidified filling material, and (d) inorganic foam filling equipment, including foam slurry production machine, transfer pump, and control system.

(a)

(b)

(c)

(d)