Dispersing agent for premixed flow-state solidified soil as well as preparation method and application of dispersing agent

The invention discloses a dispersing agent for premixed flow-state solidified soil as well as a preparation method and application of the dispersing agent. The dispersing agent for the premixed flow-state solidified soil is prepared from the following raw materials in parts by weight: 5 to 15 parts of an anti-adhesion water reducing agent, 0.5 to 0.8 part of a stabilizer and 85 to 95 parts of water, wherein the anti-adhesion water reducing agent is formed by compounding an inorganic dispersing agent and a sulfamic acid water reducing agent, and the inorganic dispersing agent is at least one of sodium silicate, sodium hexametaphosphate and sodium pyrophosphate. According to the invention, on the premise of improving the fluidity of the mucky cohesive soil slurry, through the water reducing effect of the anti-adhesion water reducing agent, the strength of the flow-state solidified soil at each age is adjusted, the rapid dispersion of the mucky cohesive soil slurry is realized, and a key technical support is pro