Abstract: Coral sand is a natural medium that is widely distributed in the islands and reefs in South China Sea. With the development of the island engineering in the South China Sea, research on its physical and mechanical properties has become increasingly extensive. Due to the special marine biogenesis and marine sedimentary environment, the macroscopic physical and mechanical behavior is quite different from that of terrigenous sand. Combing the basic physical mechanics and mechanical properties of the coral sand, this paper expounds the coral sand propagation of stress wave attenuation relations and affecting factors. The multi-scale dynamic mechanical behavior of the coral sand and the dynamic constitutive model in the influence of particle breakage in the coral sand are the research area to be strengthened in order to reveal blast wave propagation relations in the three-phase saturated coral sand and to provide the long term stability of the coral islands and reefs in our county.

Key words: Coral Sand, Physical Properties, Static and Dynamic Mechanical Properties, Stress Wave Propagations