This application belongs to the field of grouting reinforcement technology for
coal mine working faces, specifically relating to a grouting reinforcement material and its preparation method. The grouting reinforcement material comprises component A and component B in a
mass ratio of (0.8-1.2):1; component A comprises the following raw materials in parts by weight: 45-55 parts polyether
polyol, 0.4-0.8 parts catalyst, 1-2 parts curing agent, and 9-10 parts
flame retardant; component B comprises the following raw materials in parts by weight: 30-40 parts
isocyanate, 30-40 parts
flame-retardant
epoxy resin, and 3-5 parts
plasticizer. The beneficial effects of this application include: the grouting reinforcement material has good
flame retardant and mechanical properties, and a low curing
reaction temperature; while ensuring performance, it reduces the use of toxic materials and lowers production costs, opening up a wider space for the practical application of grouting materials.