四脚锥块体在斜坡式护岸的防护建筑中已广泛应用。四脚锥块体的特点是四脚突出且空隙量大(一般为50～52％),故四脚锥块体护面的消波性能比普通块体护面为好。再有,因四脚锥块体咬合性能好、稳定性也高。四脚锥块体护面通常分上下两层安放。下层安放方式是三脚向下,上层安放方式有三脚 Tetrapod cones block has been widely used in the protection of slope revetment. The characteristics of the quadruple-foot conical block is that four legs protrude and the amount of voids is large (usually 50 to 52%), so the wave-eliminating performance of the quad-foot conical block body protecting surface is better than the ordinary block retaining surface. Again, because of the four-foot conical block bite performance, stability is also high. Four-foot cone block body usually divided into two layers placed. The lower level of placement is three legs down, the upper three legs