Evaluasi Perhitungan Tanggul di Cunda - Meuraxa Lhokseumawe (Aceh)

Abstract

The problem that occurs on the coast of Cunda - Meuraksa is the abrasion of seawater due to inadequate waters. The soil in the coastal area is increasingly eroded while right on the coast there is a community road used by fishermen to go to sea. Therefore it is necessary to build dikes that can protect the coast so that the waters become calmer. The purpose of this study was to determine the structure of the embankment safe against the moment's stability and own weight and to determine the strength of the embankment from the effects of waves caused by wind generated by the sea breeze, tidal waves generated by the attraction of celestial bodies, especially the sun and the moon against the earth and waves generated by a moving ship. The planned breakwater is a sloping embankment of mountain rock material. Calculation of stone weight using Hudson formula method, and calculation of embankment stability using the Van Der Meer formula method. So, based on the results of the study, the biggest value of wind rose is 22.18 % in the northeast direction, the height of the embankment is 3 m high, the embankment's peak width is 1 m, the stone weight is 1.4506 Kg, embankment layer thickness is 1 meter, run up is 5.395 m, the dike's own weight is 545,976 t, the moment that occurs on the embankment is 4163,299 tm. With the existence of this embankment, the waves that occur do not affect the shoreline around the sea.