The utility model discloses an anti-floating anchor rod based on a sliding block spear principle, and belongs to the field of foundation anti-floating. Comprising reinforcing steel bars, movable screws, a foundation
bed, fixed limiters, movable limiters, sliding blocks and anchor rod sleeves. At the top of the anchor rod, the reinforcing steel bars are fixed to the fastening circular truncated cone through fixed limiting and movable limiting through the threaded connection structure, the fastening circular truncated cone and the foundation
cushion layer are integrated, and the stability of the reinforcing steel bars in the anchoring state is guaranteed. The foundation
bed provides a supporting face, so that the anchor rod can be kept stable when subjected to pulling force, and the
binding force between the anchor rod and surrounding soil or rock is enhanced. The
assembly in which the sliding block can slide along the anchor rod sleeve adopts the principle similar to that of a sliding block
fishing spear. The anchor rod sleeve is arranged on the outer side of the
steel bar in a sleeving mode, supporting is provided for operation of the sliding block, and meanwhile the anti-pulling performance is further improved through combination with the grouting material. The grouting
pipe is arranged on the inner side of the anchor rod and used for injecting
cement paste or other
filling materials so as to form a stable anchoring
system.