NONSLIP MAT FOR MARINE STRUCTURE

PROBLEM TO BE SOLVED: To stably bring out the supporting function, by constituting a mat member supporting a structure as a laminate mat when supporting a structure like a caisson on a foundation member with a greventive means against the sliding movement. SOLUTION: A laminate mat 10b used for supporting a structure 5 on a foundation member 3 is integrally constituted of a highly hard intermediate layer 11 and the upper and low-hard layers 12, 12a combined together with the intermediate layer. Only the lowhard layer 12a is deformed against large protruded or recessed parts of the foundation member to reduce the influence against the highly hard layer. The low-hard layer 12 copes with uneven compressive forces of the structure by the deformation thereof not to deform the laminate mat as a whole.