Recyclable liquid-filled tension anchor rod

The utility model provides a recyclable liquid filling type tension anchor rod, and relates to the technical field of anchor rods. A recoverable liquid filling type tension anchor rod comprises a sleeve, an anchor rod body and a hydraulic fastening assembly, the anchor rod body is movably arranged in the sleeve, the anchor rod body is in threaded connection with the sleeve, an anchor rod head is detachably arranged at the bottom of the anchor rod body, and a cavity is formed between the anchor rod body and the anchor rod head; the hydraulic fastening assembly comprises a hydraulic power element and a liquid storage bag, the hydraulic power element communicates with the liquid storage bag and is used for filling liquid into the liquid storage bag to enable the liquid storage bag to expand, and the liquid storage bag is arranged in the cavity; during use, the anchor rod head is separated from the anchor rod, and the liquid storage bag expands outwards from the cavity after being filled with liquid; the anchor r