HYDRAULIC TESTS ON A XBLOCPLUS ARMOURED COASTAL REVETMENT

In this study, the hydraulic tests performed on a XBlocPlus® armoured coastal revetment structure to be constructed at the mid-western Black Sea coast of Turkey are presented. The revetment structure protects a reclaimed area next to a thermal power-plant. The tests include measurements regarding i) the stability of the armour layer, ii) mean and individual wave overtopping iii) wave loads on the crown wall, and iv) overtopping induced scour at the lee-side. The revetment structure has an approximate length of 1 km. The toe depth varies between -7 m to -17 m (mean sea level, MSL). The design high water level (HWL) corresponding to 100-yr return period is calculated as +0.95 m. The nearshore bottom slope is around 1:30. The design significant wave height and the peak period at the toe of the structure with a 100- yr return period are given as Hm0 = 8.53 m and Ts = 9.91 s at the deepest section of the structure. The volume of the blocks used in the armour layer of the revetment varies as 6 m3, 14 m3 and 18 m3 from the shallowest region to the deepest section. The study covers the experiments performed for the section with 18 m3 blocks and a toe depth of -17 m (MSL).