Placement of geotextile tubes as coastal management of way hawang seashore area at Bengkulu Province

Abstract

Way Hawang Beach, one of coastal tourist attraction, located in Way Hawang Village, Maje, Kaur Regency, Bengkulu Province is suffering from erosion. The regular erosion speed is approximately 2 to 3 meters/year, taking the distance from Way Hawang coastline to West Sumatra Causeway which around 250 meters. Efforts to eradicate abrasion on Way Hawang Coast are mostly carried out using coastal protective structures. One of the breakwater structures that can reduce wave energy is geotextile tubes, which is a low-threshold breakwater structure. Geotextile tubes create a synthetic barrier along shorelines and beaches to help control erosion. Geotextile tubes placement plays an important role in the overall protection system performance. The geotextile tubes are simulated in the abrasion and accretion positions on the Way Hawang coast. The simulation results indicated that the position between abrasion and accretion are the most effective position to manage and to avoid erosion in Way Hawang coast’s area at Bengkulu Province.