Coastal and Port Construction Solutions
Seabed dredging on any marine ground requires a flexible seabed dredging fleet; the necessary equipment varies depending on the seabed hardness degree (clay, rock, schist, sand, mud) and its depth. Prior to the seabed dredging operation to be carried out, after your project implementation stages are evaluated, we assemble the equipment suitable for your project (floating excavator, bucket dredger, hopper barge, cutter-suction dredger, etc.) and ensure that they operate in compliance with the project requirements.
The equipment to be used is equipped with a D-GPS Measurement system and provides the opportunity to instantly monitor whether the work is carried out in the correct area and at the correct depth; in this way, incorrect operations are prevented and time losses are minimized.
All equipment we use in seabed dredging activities is available within our own organization and operates on a 24/7 basis.
Lcm Rota Maritime is a Dredging company specialized in the following areas
• Port and Channel Dredging • Underwater rock drilling, blasting, rock breaking and dredging of broken rock • Dredging operations carried out for environmental protection • Seabed leveling dredging operations for marine constructions • Dredging operations for coastal reclamation works
In parallel with developing International trade, the need for seabed dredging is gradually increasing in port maintenance works or in many both large and small coastal structure projects to be newly constructed.
With the growth of global trade, maritime transportation has also grown in parallel, and in order to realize this growth in international shipments and with even larger vessels, new ports are being constructed worldwide or existing port infrastructure is being expanded. For the construction of a port or for an existing port to increase its capacity; the creation of navigation channels, berthing areas and maneuvering areas, or reclaiming unused areas within the port, dredging activities are of absolute importance.
Ports or coastal structures are under a constant threat of infill. Natural sea movements drag materials on the seabed in port areas and navigation routes, filling usage areas. Rivers also mobilize alluvium due to their current velocities, and as a result, coastal facilities close to these deltas tend to be affected by this event. Due to these natural movements, the seabed fills within certain periods of time and high-draft vessels cannot berth in these areas. In order to keep these depths under control, Maintenance Dredging Works are required.
Growth in global and local population has shown a tendency to migrate to coastal regions and has required the revision and rehabilitation of coastal areas; residential areas, ports, and airport requirements are increasingly expanding towards the sea. In order to carry out such reclamation works with minimum environmental impact, many dredging projects are combined with coastal reclamation operations, and the materials obtained from seabed dredging are reclaimed and used to perform coastal fill works. In this process, there are many gains in terms of time, cost, and environmental impact.
In order to protect marine structures or settlements, preliminary protection structures must be constructed. The purpose of these protections is to guard against sea movements, provide erosion protection, and prevent deterioration caused by currents; coastal protection projects will become even more important following migration to coastal areas and requirements will increase the number of such structures. In the construction of coastal protection areas, in order to place the structure on solid foundations, loose materials on the seabed are removed by dredging and replaced with solid materials that will form the foundation of the coastal protection structure.
Pipelines, cable lines, etc. to be constructed within the sea are placed into channels on the seabed along the route to be applied in order to suffer minimum damage from sea movements and to remain fixed on the construction axis; dredging operations are carried out to create these channels. In order to perform such sensitive dredging operations, the presence of D-GPS systems on dredging vessels ensures that the channel excavation is carried out at the desired dimensions. As Lcm Rota Maritime, all our dredging vessels have technological requirements.
Dredging for environmental arrangements is generally important in industrial zones or in areas with high wastewater impact for the disposal of contaminated materials; such environmental arrangements are carried out to prevent pollution without harming the environment and to restore sea clarity.
With the increasing demand for clean energy and drinking water, the construction and maintenance of water basins and lakes used for hydroelectric power are increasing. Dredging also addresses aquatic weed infestation and excessive sedimentation problems in existing water basins and increases the availability of clean drinking water and the reliability of the water source.
Marine aggregates such as sand and gravel play a very important role in modern life. These natural resources are widely used in the construction industry and as the global population increases, the demand for construction aggregates also increases. Dredgers are used to extract and transport sand and gravel from marine extraction areas by means of dredging.
What is seabed dredging? Seabed dredging, in general definition, means increasing the sea depth level in regions where accumulated pollution is present in open seas, channels, or inland waters, and cleaning the bottoms of these regions through excavations.
• Protection of sea routes and inland waters, • Deepening and construction of port basins, • Deepening and opening of channels, • Arrangement of coasts and opening of new channels are also among the areas of use.
One of the main purposes of dredging is to increase the depth of water areas. That is, the expansion of ports, opening of waterways, seabed cleaning, and arrangement of coasts. Today, many different marine vessels are used for this purpose.
The most commonly used of these marine vessels are “Cutter, suction, excavator vessels” and “excavator, dredging vessels”.
Seabed dredging is classified as maintenance, regional, capital, and mining dredging. So what is done in these classifications? Maintenance dredging is one of the dredging types carried out to correct water shallowness caused by the accumulation of materials on the seabed in port channels, basins, or waterways over time. Capital seabed dredging is the type of excavation carried out in new port constructions and new waterways, or when more depth is required in existing areas. Its general purpose is to obtain greater depth. Mining seabed dredging is a method applied to extract valuable minerals or ores located in the bottom areas of existing water regions after they are identified. Its general purpose is mineral extraction. Regional seabed dredging; are excavation works carried out to clean pollution that occurs over time in rivers, port basins, open seas, gulfs, and channels due to natural or other effects. Its general purpose is to eliminate accumulated pollution.
The best example of regional dredging is a recent project carried out in the Izmir Gulf. If seabed dredging is summarized, it is generally carried out to eliminate pollution accumulated in the bottom areas of seas. Another purpose of use is the widening and deepening of channels, opening of new channels, and creation of new waterways.
Seabed dredging is the process of deepening, scraping, and conditioning the seabed with dredging equipment. The main purpose of this process is to deepen the sea. As a seabed dredging area, any facility, structure, port, etc. located on the coast of the sea may be included. Before dredging operations, the seabed is tested by our expert teams and necessary examinations are carried out. With the data obtained as a result of the examinations, seabed dredging is initiated with appropriate equipment and hardware. During the application process, the excavated material is loaded onto vessels and transported to the designated disposal area. Thanks to our advanced technological equipment, we reach the desired depth and carry out the dredging process. As a company, by using dredging technologies, we develop ourselves in the maritime sector and further advance our services in terms of quality and equipment. In our dredging operations; we provide services in port construction, facility capacity increase, underwater applications, and depth facility services.
Seabed dredging methods are an important subject in terms of seabed dredging applications. The water depth in the area to be dredged and the vessel size are important factors. While our company performs dredging operations in areas such as coasts and river mouths with small vessels, our larger and more advanced dredging vessels operate in large and deep seas. The dredging process is carried out with different methods and equipment. The determining factor in the selection of dredging methods is the ground structure and how the material to be dredged will be dredged. In general, according to the structure of the ground; we perform dredging operations with Hydraulic dredging, grab bucket dredging, bucket dredging, clamshell dredging, and other dredging methods.
Seabed dredging activities involve the discharge and transportation of materials such as mud, sand, rock, etc. located on the seabed by means of construction machinery and dredging pumps. In addition, in each operation performed, the equipment used varies according to the type of material on the seabed. With our well-equipped machinery and expert personnel in the field, we perform trouble-free and professional dredging operations in the sector. For a smooth seabed dredging operation, maximum dredging depth, discharge or disposal distance, the type of material to be dredged, and the dredging quantity are the matters we pay attention to during excavation. Our fundamental principle is to produce solutions by sharing with you the knowledge, experience, and works we have had to date in seabed excavation and dredging operations.
Within the scope of developing International trade, needs such as coastal projects, maintenance works, and seabed dredging operations are increasing day by day. The conditioning and deepening operations of seabeds are called seabed dredging. The most fundamental reason in the details of this process is the completion of sea deepening operations. In this context, application areas may be any point with a coastline. For example; shipyards, ports, and marine discharge lines.
Since marine dredging operations are very comprehensive works, a number of permits must be obtained from official institutions before starting the operation details. These permits must be obtained by the facility owners. After obtaining the necessary permits, expert teams conduct certain inspections within the sea. With the data obtained after these examinations, equipment preferences are determined more easily. After the equipment selection, marine dredging operations are initiated.
During marine dredging applications, the excavated material removed from the sea is loaded onto special vessels. These vessels are called spoil barges. Disposal operations are carried out at the disposal area within the coordinates permitted by official authorities. The application details continue until the desired depth is reached. The dredging operations conclude upon reaching the targeted depth.
Today, marine dredging technologies are diversifying along with the development of maritime. This diversity is actually directly proportional to increasing needs and equipment requirements. Dredging applications are especially required in areas such as port constructions, underwater installation applications, capacity increase of existing facilities, and depth facility projects.
In dredging operations carried out in the lower sections of the sea, discharge and transportation operations are performed together with construction machinery and dredging pumps located on floating vehicles in the selection of materials used. The diversity in equipment may vary depending on the operation to be performed and the depth of the sea.
• Maximum depth capacity of dredging operations • Distance of discharge and disposal areas • Characteristic features of the materials to be dredged • Dredging measurement and quantity
You can access such details.
If you would like to access details such as marine dredging operations and equipment, you may contact our company.
A dredging vessel performs operations by attaching a suction hopper that carries out tracking operations. Maintenance dredging vessels are specially designed for land reclamation, beach nourishment, and capital dredging operations. In dredging operations, the trailing suction hopper collects sand, soil, and gravel from the seabed and has a silt drag head. In addition, these specially equipped vessels are fitted with suction pipes.
These special vessels can perform stern dredging up to a depth of 20 m. While bucket support is used up to depths of 20 m, at a distance of 23 m it has a rainbow discharge capacity. It is a self-propelled vessel model that navigates easily at sea. These highly flexible vessels can also operate independently of the attached equipment. In addition, since it has a self-propelled structure, it can easily transport the dredged material over long distances.
After the details are completed in the area specially operated with dredging vessels, the vessel sails to the discharge and placement area of the material. The dredged material is discharged and disposed of in three ways depending on the type of project. The collected material is released from the special section located at the lower part of the vessel by opening the hatches and discharged to the placement area. Pumping operations to the shore are carried out with floating pipelines and submerged materials. These pump models are heavy-duty types. The dredging vessel can optionally be used within a tracking and control system. This control system is the most important step of an efficient operational process. The function and use of dredging vessels developed with artificial intelligence support have experienced a rapid increase in recent periods.
These are only some of them. Dredging vessels providing services in line with the necessary permits have recently become frequently preferred with their different areas of use. If you would like to benefit from this service in line with your needs, you may contact our company.
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