WOOD-ASSEMBLED POROUS DAM USING THINNED LOGS AT FLOOD SPILLWAY AND/OR DEBRIS BARRIER

A wood-assembled porous dam using thinned timbers at a flood spillway and a debris barrier is provided to manufacture the dam in a shape of crib by processing the thinned timbers with preservative and building with the thinned timbers and to drain rainwater well by filling the inside with aggregates. A wood-assembled porous dam using thinned timbers at a flood spillway and a debris barrier comprises long yew members accumulated mainly on wider front and rear sides(F,R) of the dam; short yew members accumulated as a notch longitudinal member connecting the front and rear sides of the dam; a base block(100) constructed as a cube at the lower side of the dam to have the broadest lateral section; a center block(200) constructed at the upper side of the base block as a cube to have a narrow lateral section; and an upper block(300) disposed at the uppermost part to have the narrowest lateral section but the broadest front side. Width of the dam is tapered downward according to section of valleys, and thickness of the dam shows a gravity dam type having a thick lower part and a thin upper part. The front side of the accumulation of the base block, the center block, and the upper block has a vertical section, and the rear side has a stair-like section. Both lateral side of each block is connected with irregular valley side by accumulating the short yew members.