PURPOSE:To integrally form drum-filling and back-filling concrete and blocks, by a method wherein KENCHI blocks, each formed integrally with a T-shape block, a template, and a coupling rod, are piled up, and concrete is placed between the T-shaped block and the back template. CONSTITUTION:A KENCHI block is formed with a T-shaped block, comprising a face part 2, a drum part 7, and a buttocks part 3, a back template 8 having the same shape as that of the face 2a, and a coupling rod 9 by means of which the T-shaped block and the back template 8 are integrally formed. Through regulation of the length of the coupling rod 9, a size ranging from the face 2a to the back of the back template 8 is brought into coincidence with the thickness of a planned retaining layer, and the blocks are piled up in a manner that the face parts 2 at the front and the back templates 8 at the back are brought into contact with each other to bring them into a self-supporting state. After the back of the back template 8 is filled with a cobble-stone layer 10, drum-filling and back-filling concrete is placed in the front side of the template. The drum-filling and back-filling concrete is placed at a stretch to condensely integrally form the drum-filling and back-filling concrete and the KENCHI blocks.
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