Coastal Protection And Management: Sea Wall Essay.

One of the major concerns of the urban population is  the fragility of the interface between land and water.

This is further worsened  by both the artificial and the natural factors

The coastal erosion therefore calls for remedies for the sake of protecting structures such as monuments,  valuable properties, Cultivated Lands and houses

Sea level rise worldwide

One the methods used for coastal protection and management is the sea wall construction

There are of diverse types

Parallel to the shoreline

 Have existed from as early as first BC

 There are many around the world. Examples are:

1.The Vancouver Sea Wall

2.Alaskan Way Seawall

They have been successful due to:

Deep foundation making them stable2

Earth anchors buried upland

Wide foundations

Conclusion

The seawall will fix the location of the coastline, but it will not arrest the ongoing erosion in the coastal profile. On the contrary, it will to a varying degree, accelerate the erosion. It is quite normal that the beach disappears in front of a seawall, and it will most often be necessary, after some years, to strengthen the foot of the seawall with a rubble revetment.

A seawall will decrease the release of sediments from the section it protects and will have a negative impact on the sediment budget along adjacent shorelines.

References

(1) Hadi, S. P.; Anggoro, S.; Purnaweni, H.; Yuliastuti, N.; Ekopriyono, A.; Hamdani, R. S. Assessing the Giant Sea Wall for Sustainable Coastal Development: Case Study of Semarang City, Indonesia. AACL Bioflux 2020.

(2) Nurhasanah, A.; Nizam; Triatmadja, R. Tsunami Force on A Building With Sea Wall Protection. 3rd Int. Conf. Eng. Technol. Dev. 2014 2014.