底水路形 防波堤의 波浪 傳達率에 관한 實驗的 硏究 (1)

An experimental study on the wave trnasmittance coefficient at a breakwater with under conduit (1)

Hydraulic experiments were carried out to investigate the hydraulic characteristics of the breakwater with two types of under conduit for regular waves of various heights and periods. It was found that the small value of steepness(H/L; ratio of wave height(H) to wave length(L)) and relative depth(d/L; ratio of water depth(d) to wave length(L)) and the large value of period(T) have big transmission coefficient at breakwater with two types of under conduits. The larger wave steepness and relative depth, the smaller wave transmission rate. There was little difference of transmission at breakwater with small perforated rate.