RETAINING WALL BLOCK, RETAINING WALL AND RETAINING WALL CONSTRUCTION METHOD AND ARTIFICIAL ISLAND

摘要

PROBLEM TO BE SOLVED: To provide a retaining wall block used for a retaining wall construction, a retaining wall using the same, and a retaining wall construction method, which can prevent polluted water from flowing into the sea and ensure safety against a large tsunami.;SOLUTION: A projection length of a convexity 16 from a side face 20 is longer than a depth of a concavity 14. The maximum width of the convexity 16 is smaller than that of the concavity 14. The convexity 16 and the concavity 14 can substantially engage with each other. The convexity 16 has a shape in which a semi-circular cylinder projection on the side face on which the convexity 16 is formed protrudes in a direction perpendicular to the side face. The concavity 14 has a shape in which a semi-circular cylinder groove of the side face is moved in parallel with a direction perpendicular to the side face on which the concavity 14 is formed and the direction in which the depth decreases. The shape of the convexity 16 and the concavity 14 is such a shape that when the convexity 16 engages with the concavity 14, a distance between the convexity 16 and the concavity 14 increases at position away from a butting position of the convexity 16 and the concavity 14.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT