POROUS UNDERWATER BREAKWATER FOR PREVENTING SHORE EROSION AND FORMING A FISHING GROUND, AND METHOD FOR PRODUCING ENVIRONMENTALLY-FRIENDLY BLOCKS FOR THE UNDERWATER BREAKWATER

摘要

The present invention relates to a porous underwater breakwater for preventing shore erosion and forming a fishing ground, and to a method for producing environmentally-friendly blocks for the underwater breakwater, wherein the underwater breakwater is formed by the environmentally-friendly blocks made of a mixture of effective micro-organisms (EM) and red clay such that valleys and ridges are formed on a seabed of a sea area, to thereby purify water and to prevent red tide outbreaks, and thus achieving early marine afforestation, and wherein the wave energy of swelling waves is absorbed, dispersed, and diffracted at a base layer, an intermediate layer, and a top layer of the breakwater to decrease the wave energy and to thereby significantly decrease a gap between wave heights and restore an eroded area by means of beach nourishment. According to the porous underwater breakwater for preventing shore erosion and forming a fishing ground and the method for producing environmentally-friendly blocks for the underwater breakwater, an energy-absorbing unit formed by stacking multiple blocks on the seabed of the sea area absorbs, disperses, and diffracts the wave energy to effectively decrease the wave energy, and fish can migrate through the pores, the sizes of which correspond to the length of pore-maintaining protrusions formed at each block and communicating spaces, thereby providing a fish habitat and spawning ground. Further, the effective micro-organisms and red clay mixed with concrete mortar neutralize the toxicity of the concrete, purify water, and prevent red tide outbreaks.