Device and method for anchoring mooring rope into underwater

The invention provides a device and method for anchoring a mooring rope into underwater, and relates to the technical field of bridge deepwater locating. The ring beam of the device for anchoring the mooring rope into the underwater is arranged on an anchor pile in a sleeving mode, a plurality of lifting jacks are arranged above the anchor pile, and each lifting jack is connected with the ring beam through a steel strand wire; a plurality of first steel wedge blocks are fixed to the inner ring of the ring beam, and a second steel wedge block is arranged between each first steel wedge block and the anchor pile in a clamping mode; one end of the anchoring mooring rope sequentially penetrates through all limiting steel plates, and steel wire sleeves located on the riverbed surface are arranged on the anchor pile in a sleeving mode. According to the method for anchoring the mooring rope into the underwater, the anchoring mooring rope is fixed to the ring beam in a penetrating and winding mode, then the anchor pile is sleeved with the anchoring mooring rope, the ring beam is lowered to an anchoring point of the anchoring mooring rope at a designated height underwater through the steel wire rope, the steel strand wire is lifted to lift the first steel wedge block and squeeze the second steel wedge block, and locating of the ring beam can be achieved. The device and method for anchoring the mooring rope into the underwater is adaptable to anchoring under various riverbed conditions, the anchoring effect is reliable, and the anchoring project amount is small.