Multifunctional expanding-type recoverable anchor rod

The invention discloses a multifunctional expanding-type recoverable anchor rod. The multifunctional expanding-type recoverable anchor rod comprises a hollow anchor rod body, a fixed seat is arrangedat one end of the rod body, and a hollow hole coaxial with the rod body is formed in the fixed seat; the rod body is at least internally provided with a set of movable blocks, each set of movable blocks at least comprises one pair of movable blocks symmetrically arranged in a spaced mode with the central axis of the hollow hole as the symmetric axis, the outer side faces of the movable blocks arefixedly connected with the inner wall of the rod body through springs, radial tooth parts are fixedly arranged on the outer side faces of the movable blocks, and through holes enabling the tooth partsto penetrate are formed in the rod body; and an adjusting rod capable of moving linearly is inserted into the hollow hole of the fixed seat, the inner end of the adjusting rod extends into the rod body and is inserted between