Method of constructing underwater concrete block structure

A method of constructing an underwater concrete block structure, the method comprising:

• fabricating a plurality of concrete blocks having a vertical hole extending in the vertical direction;
• after the concrete block fabricating step, forming a foundation concrete block structure by installing the concrete block on the seafloor;
• after the foundation concrete block structure formation step, vertically installing at least one guide pole in the foundation concrete block structure by inserting a lower end of the guide pole extending in the vertical direction into the vertical hole of the concrete blocks forming the foundation concrete block structure so that an upper end of the guide pole protrudes above the surface of the water;
• after the guide pole installation step, forming a concrete block stack by repeating a process of positioning the concrete block to be installed above the surface of the water such that the vertical hole of the concrete block to be installed is above the guide pole, and lowering the concrete block to be installed so that the concrete block to be installed is installed on an upper portion of the foundation concrete block structure in a state in which the guide pole is inserted into the vertical hole of the concrete block to be installed;
• and
• after the concrete block stack formation step, forming a main concrete column for binding the plurality of concrete blocks, extending in the vertical direction in a main continuous hole, the main continuous hole defining both the space in which the guide pole is removed by removing the guide poles disposed in the concrete block stack and the space in which the vertical holes of the concrete blocks vertically stacked on one another are continuously connected in the vertical direction.