| abstract |
The invention discloses a method for evaluating the grouting effect of a polymer grouting material and a grouting material. It mainly compares the cement grouting material with relatively mature grouting parameters, and selects the polymer grouting material by comparing the filling rate. The grouting parameters of the material. The polymer grouting material provided includes two components, A and B. The A component is composed of isocyanate, foaming agent, foam stabilizer, antistatic agent and epoxy resin and epoxy resin prepolymer diluent; B component It is composed of phosphoric acid, citric acid, polyol, water-soluble trihydroxypolyether, curing agent, flame retardant and plasticizer. Utilizing the evaluation method of the present invention, the grouting parameters can be optimized, the grouting time is shortened during the bolt construction process, the grouting materials are saved, the filling effect is good, the bearing capacity of the surrounding rock can be enhanced safely and efficiently, and the grouting anchor cable Apply high preload to improve the supporting strength of surrounding rock. |