Preparation method of polymer foundation soil consolidation agent

The invention discloses a preparation method of a polymer foundation soil consolidation agent. The preparation method comprises following steps: a modified triisopropanolamine solution is prepared; methacrylic acid and N-isopropyl acrylamide are mixed at room temperature at a ratio of 1:2-3; cement, steel slag, a water reducer, and an anti-foaming agent are introduced into a homogenizer reaction vessel containing the modified triisopropanolamine solution in a manner that solid material first and liquid material second; the mixture of methacrylic acid and N-isopropyl acrylamide is added, and uniform stirring is carried out in the homogenizer reaction vessel so as to obtain the polymer foundation soil consolidation agent. The polymer foundation soil consolidation agent is capable of solidifying mud, mud powder soli, soft soil, muck, and the like with a water content ranging from 10 to 70%, and especially can be used for solidifying soil with an organic matter content lower than 30%, so that coagulable solid application range is widened, consolidated product compressive modulus of resilience and unconfined compressive strength are increased obviously, and it is ensured that without adding of broken stone, the consolidated is capable of providing higher foundation carrying capacity for upper engineering construction.