| 摘要 |
A retaining wall constructing block provided with coupling protrusions and a coupling groove on a side surface,
wherein a first protrusion (1) and a second protrusion (2) are formed to be inclined with respect to a front surface as an engaging structure in one side portion of a retaining wall constructing first block unit, a coupling groove (3) is formed therebetween by said first and second protrusions (1, 2), wherein said first block unit further comprises on a rear surface further first protrusion and second protrusions (11,12) and a coupling groove (13) formed therebetween to be vertically engageable with the first and second protrusions (1,2) of a front surface to construct the retaining wall. |
