Abstract: Disclosed is a retaining wall construction system for preventing tsunamis and flood damages and a construction method thereof. The retaining wall construction system includes hexagonal multi-layered interlocking blocks built in a plurality of lines for forming a retaining wall, wherein S-shaped connection sections are formed on an outer periphery for a plurality of interlocking blocks, and hexagonal multi-layered interlocking blocks, which are adjacent to each other and different from each other, are connected to each other via the S-shaped connection sections to be movable in the vertical direction.

Abstract: The present invention is directed to a road payment system with instant rainwater penetration and storing functions for protecting flood and a construction method thereof, which system comprises a plurality of lower blocks which each have a vertical engaging wing formed at a side of each lower block and a first through hole formed at a center region, with the neighboring lower blocks being engaged with each other in a vertical direction for preventing them from being separated in a horizontal direction; a plurality of intermediate layer blocks which are arranged spaced apart in a horizontal direction at the upper sides of the lower blocks and each have a second through hole in a vertical direction at a center region, with the neighboring intermediate layer blocks being engaged with each other; and a plurality of upper surface layer blocks which are arranged at the upper sides of the intermediate layer blocks and form an upper side of the road payment and are connected with each other or are connected with the

Abstract: The present invention pertains to a retaining wall construction system for preventing tsunamis and flood damages and a construction method thereof. The retaining wall construction system for preventing tsunamis and flood damages includes hexagonal multi-layered interlocking blocks (10) built in a plurality of lines for forming a retaining wall, wherein S-shaped connection sections (11) are formed on an outer periphery for a plurality of interlocking blocks, and hexagonal multi-layered interlocking blocks (10), which are adjacent to each other and different from each other, are connected to each other via the S-shaped connection sections (11) to be movable in the vertical direction. According to the present invention above, it is possible to semi-permanently maintain a stable state at the basic lower portions of the structure as the vertically interlocked blocks lower like a shutter to block caved-in spaces when the basic portions of the structure are caved in by waves or flowing water.