TY - JOUR
T1 - Physical Model of Natural Coastal Protection System
T2 - Geobag-Dyke Performance to Effectiveness of Natural Coastal Protection System
AU - Yuanita, Nita
AU - Kurniawan, Alamsyah
AU - Hakim, Muhammad Luqman Al
AU - Irawan, Krisna Reynaldi
AU - Saputra, Novianto Wono
N1 - Publisher Copyright:
© Penerbit UMT
PY - 2020
Y1 - 2020
N2 - One of the potential hazards that can cause major problems in coastal areas is erosion. In order to solve this problem, the notion of sustainable coastal development has garnered growing attention around the world. Coastal zone management mechanisms aim to ensure the sustainability of resources and the environment. For example, natural coastal protection using vegetation such as mangrove trees is currently preferred in many places in the world. However, there are challenges in the development of this natural form of coastalprotection, e.g. mangrove seedling trees can be damaged by the waves or the current before they grow strong enough, and thus require appropriate protection until at least two years after planting. To solve this problem, a natural coastal protection system that combines a main natural protection and a temporary man-made structure is proposed. After a process of weighing temporary man-made-structure alternatives, the geobag dyke was selected. This study aimed to quantify the effects of various geobag dyke configurations and geobag unit weights on wave height reduction. Laboratory experiments were conducted on a narrow wave flume using a mangrove model as main natural protection and geotextilegeobag models as temporary man-made structures. Various wave conditions were generated during the laboratory tests. This paper focuses on the experimental results of wave transmission through the protection system in order to determine the most effective geobag dyke configuration to reduce the wave height. Based on experimental modelling, the most effective geobag dyke configuration uses relatively heavy geobag units with a moderate dyke slope (1:1.5).
AB - One of the potential hazards that can cause major problems in coastal areas is erosion. In order to solve this problem, the notion of sustainable coastal development has garnered growing attention around the world. Coastal zone management mechanisms aim to ensure the sustainability of resources and the environment. For example, natural coastal protection using vegetation such as mangrove trees is currently preferred in many places in the world. However, there are challenges in the development of this natural form of coastalprotection, e.g. mangrove seedling trees can be damaged by the waves or the current before they grow strong enough, and thus require appropriate protection until at least two years after planting. To solve this problem, a natural coastal protection system that combines a main natural protection and a temporary man-made structure is proposed. After a process of weighing temporary man-made-structure alternatives, the geobag dyke was selected. This study aimed to quantify the effects of various geobag dyke configurations and geobag unit weights on wave height reduction. Laboratory experiments were conducted on a narrow wave flume using a mangrove model as main natural protection and geotextilegeobag models as temporary man-made structures. Various wave conditions were generated during the laboratory tests. This paper focuses on the experimental results of wave transmission through the protection system in order to determine the most effective geobag dyke configuration to reduce the wave height. Based on experimental modelling, the most effective geobag dyke configuration uses relatively heavy geobag units with a moderate dyke slope (1:1.5).
KW - Natural coastal protection
KW - coastal sustainability
KW - geobags
KW - mangroves
KW - temporary structure
UR - http://www.scopus.com/inward/record.url?scp=85099512477&partnerID=8YFLogxK
U2 - 10.46754/jssm.2020.08.008
DO - 10.46754/jssm.2020.08.008
M3 - Article
AN - SCOPUS:85099512477
SN - 1823-8556
VL - 15
SP - 85
EP - 99
JO - Journal of Sustainability Science and Management
JF - Journal of Sustainability Science and Management
IS - 6
ER -