Self-drilling type pre-stressed anchor rod reinforcing device and method for power transmission line water-flooded tower foundation

The invention discloses a self-drilling type pre-stressed anchor rod reinforcing device and method for a power transmission line water-flooded tower foundation. The self-drilling type pre-stressed anchor rod reinforcing device comprises an anchor rod, a drill bit, a connector, a stop-grouting plug, a base plate and a nut. The drill bit and the connector are arranged at the two ends of the anchor rod respectively, the stop-grouting plug, the base plate and the nut are matched with an anchor rod body, the stop-grouting plug faces the drill bit end, the nut faces the connector end, the base plate is located between the stop-grouting plug and the nut, a guide hole is vertically formed downwards from the water-flooded tower foundation, cement paste is injected into the guide hole and solidified, then the anchor rod and the water-flooded tower foundation are arranged for anchoring, counter force of pre-stress of the anchor rod counteracts on the surface of a weir pond through the water-flooded tower foundation, and