Integrated Geosynthetic Solutions for Coastal Protection: A Case Study Compilation

Abstract

Coastal erosion and flooding are complex global challenges that are intensified by population growth and economic activity. Traditional mitigation methods—such as sea walls, revetments, riprap, and offshore reefs—often face limitations due to site-specific and environmental constraints. In contrast, geosynthetic products offer sustainable, cost-effective, and adaptable solutions for coastal protection. Strategically placed geosynthetics, including scour aprons and anchor tubes, can be integrated into artificial landscapes, such as man-made dunes, to enhance resilience. This study examines real-world applications of geosynthetics across India’s coastline. In Mukkachery, Mangalore, geotextile bags have effectively mitigated damage from cyclonic high tides, protecting homes and farmland. At Cheruvathur harbour in Kerala, despite illegal sand mining causing geotextile tube sinking, these methods remain viable in areas lacking natural rock resources. On Tamil Nadu’s Kattupalli coast, pyramid-shaped geotextile tube arrangements have improved stability, enabling beach nourishment and land reclamation. These cases highlight the versatility and environmental benefits of geosynthetics, advocating their broader adoption in coastal management. By challenging conventional approaches, geosynthetic solutions promote sustainability, scalability, and resilience in vulnerable coastal zones.