Fabricated vertical seam type fishway construction method

The invention provides an assembled vertical seam type fishway construction method which comprises a plurality of assembled fishway units, each assembled fishway unit comprises a U-shaped unit, a cross beam is arranged between the bottoms of two side plates of each U-shaped unit, partition walls are arranged on the opposite inner wall faces of the U-shaped units respectively, a butt-joint protruding block is arranged at one end of each U-shaped unit, and a butt-joint protruding block is arranged at the other end of each U-shaped unit. The other end of each U-shaped unit is provided with a butt joint groove matched with the corresponding butt joint protruding block. Prestress corrugated pipes are arranged at the four corners of each U-shaped unit in a penetrating mode. According to the assembly type fishway, the whole assembly type fishway units are prefabricated, the multiple sections of assembly type fishway units form a whole on site in a tensioning and grouting mode, the assembly type construction degree c