A prestressed intelligent circulating grouting
system and its control method, the grouting pipeline between the grouting pump and the grouting port is provided with a pressure compensation device, the pressure compensating device includes a
piston and an elastic mechanism, and the
piston end The head is connected with the grouting pipeline, and the elastic force of the elastic mechanism is to drive the
piston end to press into the grouting pipeline; the pressure maintaining devices are respectively installed at the
slurry inlet and the
slurry outlet, and respectively control the amount of
slurry entering the channel of the beam member and the
discharge The amount of slurry in the channel of the beam member; the
electromagnetic flowmeter is respectively installed at the slurry inlet and the slurry outlet to measure the flow signals of the slurry inlet and the slurry outlet; The grouting action, the water-
cement ratio control step adopts closed-
loop control, and the effective cycle pressure value is set; the holding pressure value: the
lower limit value of the holding pressure; the upper
limit value of the holding pressure; the
holding time value controls the component slurry control. Its advantages are stable slurry pressure, compact grouting and good component quality.