Expanded-head anchor cable with double functions of hole guiding and guniting and construction method of expanded-head anchor cable

The invention relates to an expanded-head anchor cable with double functions of hole guiding and guniting and a construction method of the expanded-head anchor cable. The expanded-head anchor cable comprises an anchor cable body and a hole guiding drill tip. The hole guiding drill tip is used for being matched with a drill rod for use, one end of the drill rod is used for being connected to a drilling machine, and the other end of the drill rod is detachably connected to the hole guiding drill tip. Guniting holes are formed in the side wall of the drill rod in the circumferential direction at intervals. The drilling rod is sleeved with a limiting ring, the drilling rod is sleeved with a first anchor plate, the first anchor plate is installed on the drilling rod in a sliding mode, the first anchor plate is located at the end, close to the hole guiding drill tip, of the drilling rod, and the first anchor plate abuts against the side, close to the hole guiding drill tip, of the limiting block. One end of the anc