The invention relates to an anchoring agent, which is resin 
mortar for an anchoring agent and the anchoring agent, and is used for anchoring large-
diameter anchor cables used in the construction of the support of 
coal mine roadways and the protection of underground 
engineering. The resin 
mortar comprises the following compositions in portion by 
mass: 800 to 1,200 portions of MG 
unsaturated polyester resin, 4,000 to 6,000 portions of limestone 
powder, 3 to 10 portions of 
dimethylaniline, and 6 to 12 portions of white 
carbon black, wherein the particle size of the limestone 
powder is between 80 and 120 meshes. The resin 
mortar and a curing agent form a bi-component anchoring agent. The anchoring agent can effectively reduce the consistency of the resin mortar, and improve the 
compressive strength after the solidification of the anchoring agent, thereby realizing the effects during the use such as high 
adhesive force, low stirring resistance and the like; and the anchoring agent meets the requirement of using large-
diameter and high-strength anchor cables in the support of the 
coal mine roadways, reduces anchoring length, construction time and construction personnel, and improves the production efficiency.