Water-borne polyether polyol capable of serving as grouting material

The invention relates to water-borne polyether polyol capable of serving as a grouting material, and belongs to the field of polyurethane foaming. Two kinds of polyols serve as initiators to be sufficiently mixed under the effect of an alkali catalyst, epoxypropane is utilized to conduct pre-dropping so as to react with the polyol, then ethylene oxide is utilized to react with polyol, and the finally needed product is obtained through neutralizing, refining and filtering. The invention relates to water-borne polyether polyol can serve as a grouting material. The product has the good extensibility, elasticity, anti-permeability and low temperature resistance, and can remain the original shape forever in water. The prepared product has the low viscosity after being mixed with water, and thegood groutability, the induration is harmless to the human body, free of toxicity and free of pollution when being dipped in water. The serous fluid reacts with water to form the elastic induration substance and release CO2 g