Large-circulation grouting system

The utility model provides a large-circulation grouting system which comprises a low-speed slurry storage barrel, a high-speed slurry making machine, a slurry inlet measurement and control instrument, a slurry return measurement and control instrument, a grouting pump, a slurry inlet pipe and a slurry return pipe. The slurry inlet pipe is connected to a slurry inlet measurement and control instrument, and the slurry return pipe is connected to a slurry return measurement and control instrument; the slurry inlet measurement and control instrument and the slurry return measurement and control instrument are connected with the low-speed slurry storage barrel; a grout inlet of the grouting pump is connected with the low-speed grout storage barrel, and a grout outlet of the grouting pump is connected with the grout inlet measuring and controlling instrument. According to the large-circulation grouting system, air in the pipeline can be completely exhausted, the grout quality can be accurately controlled, and the g