The present invention discloses a filling
slurry preparation
system and a preparation method thereof, wherein the preparation
system comprises a thickener, an emergency tank, a stirring
system, a filling pump, and a
cement conveying and metering device installed at a
discharge port of a
cement silo, the thickener and the filling pump are both arranged on the ground, a stepped pit is dug under the ground, the stirring system is composed of a high-speed flexible mixer, the high-speed flexible mixer and the emergency tank are arranged in the pit from top to bottom, a hopper and / or a thickening
slurry pump is also arranged in the pit between the high-speed flexible mixer and the emergency tank, the sand
discharge port of the thickener and the delivery port of the
cement conveying and metering device are both connected to the feed port of the high-speed flexible mixer, the hopper is connected between the
discharge port of the high-speed flexible mixer and the filling borehole of the underground filling
pipe network, and the thickening
slurry pump is connected between the discharge port of the high-speed flexible mixer and the pump hopper of the filling pump. The present invention has fewer slurry preparation links, reduces the investment in
plant construction, and has flexible equipment
layout.