A seawall (or sea wall) is a form of coastal defense constructed where the sea, and associated coastal processes, impact directly upon the landforms of the coast. The purpose of a seawall is to protect areas of human habitation, conservation, and leisure activities from the action of tides, waves, or tsunamis. [1]

Seawalls are commonly built and run along shoreline to prevent coastal structures and areas from the detrimental influence of ocean wave actions and flooding which are driven by storms. There are various arrangements or configurations that might be employed includes curved face seawall, stepped face seawall, rubble mound seawall.

Sea walls can be effective in providing immediate coastal protection against waves and storm surges. Their solid structure and height create a physical barrier that absorbs and dissipates wave energy, reducing the risk of erosion and flooding.

Seawalls are onshore structures with the principal function of preventing or alleviating overtopping and flooding of the land and the structures behind due to storm surges and waves. Seawalls are built parallel to the shoreline as a reinforcement of a part of the coastal profile.

Seawalls or revetments are shore-parallel structures at the transition between the (sandy) beach and the (higher) mainland or dune. The height of a seawall often covers the total height difference between the beach and the surface level of the mainland.

A seawall is constructed at the coastline, at the foot of possible cliffs or dunes. A seawall is typically a sloping concrete structure; it can be smooth, stepped-faced or curved-faced. A seawall can also be built as a rubble-mound structure, as a block seawall, steel or wooden structure.

A Seawall effectively acts as a form of coastal defense by redirecting the energy of a wave made by a storm surge back to the ocean water, protecting the coastline from flooding and reducing erosion of the beachfront. A seawall is a passive structure, which protects the coast against erosion and flooding.

2021年12月20日 · A seawall is a shore parallel and (nearly) vertical structure at the transition between the low-lying (sandy) beach and the (higher) mainland or dune (see Fig. 10.22). The seawall bridges the total height difference between beach and surface level of the mainland (often a boulevard, road or parking area).

The main advantage of a seawall is that it provides a high degree of protection against coastal flooding and erosion. A well maintained and appropriately designed seawall will also fix the boundary between the sea and land to ensure no further erosion will …

Seawalls are hard engineered structures with a primary function to prevent further erosion of the shoreline. They are built parallel to the shore and aim to hold or prevent sliding of the soil, while providing protection from wave action (UNFCCC, 1999).