Positioning riprapping method for constructing island breakwater of artificial island

The invention discloses a positioning riprapping method for constructing an island breakwater of an artificial island, which comprises the following steps: (1) positioning each steel pipe pile at places 15 to 17 meters away from the axial line of the island breakwater in turn at certain intervals by using a GPS positioning device, and driving the steel pipe piles into the soil at water bottom one by one; (2) simultaneously drawing a plurality of tuck net ships for transporting stones into each appointed pile site in a water area for constructing the island breakwater, wherein the prow and the stern of each tuck net ship are berthed alongside the steel pipe piles with cables, and the stern is thrown with a stern anchor to berth the tuck net ship in a riprapping area; (3) swinging the stones in cabins for multiple times by using shipborne cranes of the tuck net ships to riprap the stones at the appointed positions, and bearing off the ships from the site after riprapping the stones; and (4) drawing the next batch of the tuck net ships fully loaded with the stones into the riprapping site, and repeating the steps 1(2) to 1(3) until riprapping of the cross-section of the artificial island breakwater at that place is finished. The method adopts the steel pipe piles to replace positioning barges to greatly reduce the construction cost, improve the working efficiency, and shorten the construction period of the island breakwater of the artificial island.