troll A 3D animation
The Troll A platform is a con deep offshore natural gas platform in the Troll gas field off the west coast of Norway. It is the tallest and heaviest structure that has ever been moved to another position, relative to the surface of the Earth, and is among the largest and most complex engineering projects in history.
geotube
Structure Geotube is used as an integral component in the design and construction of a variety of marine and hydraulic engineering structures such as breakwaters, levies, and marine spoil-containment structures. Once in place, our technology provides years of continued performance. Geotube is a permeable system fabricated from an engineered textile specifically designed for containment and shoreline erosion protection. The Geotube system has unique designed strength, filtration, and retention characteristics to withhold sand or similar materials to act as a permanent or non-permanent containment structure:
Coastal erosion protection
There are three common forms of coastal erosion control methods. These three include: soft-erosion controls, hard-erosion controls, and relocation.
Hard-erosion controls
Hard-erosion control methods provide a more permanent solution than soft-erosion control methods.Seawalls and groynes serve as semi-permanent infrastructure. These structures are not immune from normal wear-and-tear and will have to be refurbished or rebuilt. It is estimated the average lifespan of a seawall is 50–100 years and the average for a groyne is 30–40 years. Because of their relative permanence, it is assumed that these structures can be a final solution to erosion. Seawalls can also deprive public access to the beach and drastically alter the natural state of the beach. Groynes also drastically alter the natural state of the beach. Some claim that groynes could reduce the interval between beach nourishment projects though they are not seen as a solution to beach nourishment. Other criticisms of seawalls are that they can be expensive, difficult to maintain, and can sometimes cause further damage to the beach if built improperly. Natural forms of hard-erosion control include planting or maintaining native vegetation, such as mangrove forests and coral reefs.
Soft-erosion controls
Sandbagged beach at the site of Hurricane Sandy. Soft erosion strategies refer to temporary options of slowing the effects of erosion. These options, including sandbag and beach nourishment, are not intended to be long term solutions or permanent solutions. Another method, beach scraping or beach bulldozing allows for the creation of an artificial dune in front of a building or as means of preserving a building foundation. However, there is a One of the most common methods of soft erosion control is beach nourishment projects. These projects involve dredging sand and moving it to the beaches as a means of reestablishing the sand lost due to erosion. In some situations, beach nourishment is not a suitable measure to take for erosion control, such as in areas with sand sinks or frequent and large storms. Dynamic revetment, which uses loose cobble to mimic the function of a natural storm beach, may be a soft-erosion control alternative in high energy environments such as open coastlines.
Relocation
Managed retreat Relocation of infrastructure any housing farther away from the coast is also an option. The natural processes of both absolute and relative sea level rise and erosion are considered in rebuilding. Depending on factors such as the severity of the erosion, as well as the natural landscape of the property, relocation could simply mean moving inland by a short distance or relocation can be to completely remove improvements from an area. Typically, there has been low public support for “retreating.
Hard-erosion controls
Hard-erosion control methods provide a more permanent solution than soft-erosion control methods.Seawalls and groynes serve as semi-permanent infrastructure. These structures are not immune from normal wear-and-tear and will have to be refurbished or rebuilt. It is estimated the average lifespan of a seawall is 50–100 years and the average for a groyne is 30–40 years. Because of their relative permanence, it is assumed that these structures can be a final solution to erosion. Seawalls can also deprive public access to the beach and drastically alter the natural state of the beach. Groynes also drastically alter the natural state of the beach. Some claim that groynes could reduce the interval between beach nourishment projects though they are not seen as a solution to beach nourishment. Other criticisms of seawalls are that they can be expensive, difficult to maintain, and can sometimes cause further damage to the beach if built improperly. Natural forms of hard-erosion control include planting or maintaining native vegetation, such as mangrove forests and coral reefs.
Soft-erosion controls
Sandbagged beach at the site of Hurricane Sandy. Soft erosion strategies refer to temporary options of slowing the effects of erosion. These options, including sandbag and beach nourishment, are not intended to be long term solutions or permanent solutions. Another method, beach scraping or beach bulldozing allows for the creation of an artificial dune in front of a building or as means of preserving a building foundation. However, there is a One of the most common methods of soft erosion control is beach nourishment projects. These projects involve dredging sand and moving it to the beaches as a means of reestablishing the sand lost due to erosion. In some situations, beach nourishment is not a suitable measure to take for erosion control, such as in areas with sand sinks or frequent and large storms. Dynamic revetment, which uses loose cobble to mimic the function of a natural storm beach, may be a soft-erosion control alternative in high energy environments such as open coastlines.
Relocation
Managed retreat Relocation of infrastructure any housing farther away from the coast is also an option. The natural processes of both absolute and relative sea level rise and erosion are considered in rebuilding. Depending on factors such as the severity of the erosion, as well as the natural landscape of the property, relocation could simply mean moving inland by a short distance or relocation can be to completely remove improvements from an area. Typically, there has been low public support for “retreating.
|
coastal erosion control methods |
|
