Coarse aggregate slurry filling system

The utility model provides a coarse aggregate slurry filling system, which relates to the technical field of goaf filling construction tools and comprises a slurry filling hopper, a slurry flow control device, an aggregate feeding device and a stirring device. A slurry inlet, an aggregate inlet and a discharge hole are formed in the slurry injection hopper; the slurry flow control device is connected with the slurry inlet and is used for controlling the slurry flow; the aggregate feeding device is connected with the aggregate inlet and is used for quantitatively conveying aggregate to the aggregate inlet; the stirring device comprises a motor and a stirring assembly, the motor is installed in the grouting material hopper, and the stirring assembly is pivoted in the grouting material hopper. The technical problems that in the prior art, coarse aggregate and slurry are mixed through manual feeding and then injected into the ground, so that the slurry and the coarse aggregate are not fully mixed, and the mixing