Geo Tube

Aptly named to reflect their shape, geotubes are tube-shaped bags that environmental workers install along the shorelines of water bodies. Geotubes are an integral part of the dewatering stage of dredging — the process of isolating and retaining solids while releasing clear water back into the waterway. Engineers build the walls of geotubes with a strong yet permeable fabric that allows water to drain out while holding onto particulate matter. In addition to dewatering dredged slurry, geotubes are instrumental in protecting shorelines and building dikes, breakwaters and islands.

Specification:

Geotube sludge dewatering containers are highly advantageous to dredging operations. Check out some of the features below:

• They boast a high flow rate that reduces volume and retains solids.
• They discharge clear water that can often be returned to the waterway and recirculated through the system.
• They’re customizable, allowing you to save costly and finite land space.
• They can be stacked on top of each other or placed in mobile containers, perfect for project sites with limited workspace.
• They’re easy to empty and remove from the site.
• They’re efficient, versatile and environmentally friendly.
• They’re made of a strong textile that can withstand all weather conditions.
• They help reduce operational safety risks.
• They’re cost-effective and easy to maintain.

Usages:

Various industries use geotube systems to manage their water, including the following:

• Agriculture, including dairy, poultry and hog waste management
• Marine remediation, including lakes, rivers, ponds, canals, channels and inlets
• Revetments, dykes, groins and breakwaters
• Shoreline protection
• Land reclamation
• Island and wetlands creation
• Power and utility
• Pulp and paper mills
• Wastewater treatment plants
• Mining and mineral processing
• Construction platforms
• Offshore structures

How it works:

We’ve explained that geotubes are used to pull sediment from water, but how exactly do they do it? Managing waterways with geotubes involves three steps — filling the tubes, dewatering the contents and consolidating the remaining sediment. Let’s dive into the details of each step.

1. FILLING THE GEOTUBE WITH DREDGED MATERIAL

A pump within the body of water being dredged hydraulically or mechanically fills the geotube with dredged material. This material is commonly known as sludge or slurry and consists of water mixed with sand or dirt, depending on the type of waterway.

Once inside the geotube, the sludge is treated with environmentally-safe polymers via a polymer-injecting system. These agents speed up the dewatering process by binding the solids together and separating them from the water.

2. DEWATERING THE DREDGED MATERIAL

Through gravity, the particulate debris settles in an even layer at the bottom of the geotube. The newly sediment-free water rises to the top and drains out of the specially engineered fabric, leaving the solids behind and greatly reducing volume. This process occurs continuously until the geotube eventually fills with sediment.

The water that geotubes release, known as effluent, is typically clear and can often flow back to the waterway without treatment.

3. CONSOLIDATING THE REMAINING SEDIMENT

Once the geotube has reached capacity, the solids will continue to densify through desiccation as the remaining moisture evaporates through the fabric.

Workers can remove the solids from the tube and keep them on-site, haul them to a landfill for disposal or transport them to another area in need of land nourishment.

Faq:

HOW ARE GEOTUBES INSTALLED?

Answer:

1. ESTABLISHING THE FOUNDATION

The ground below the geotube and its protective underlayer, known as a scour apron, must be solid, level and free of sticks, stones and other protrusions that could tear the fabric. Ensure the site has been cleared and graded before placing the geotube on it.

2. ALIGNING THE GEOTUBE

Geotubes should be positioned properly in relation to the rest of the dredging site. You can align and secure a geotube using straps, cradles or physical supports.

Filled geotubes should reach an effective height within 150 millimeters of the specified elevation. Effective height is the distance between the existing foundation and the average top of the filled tube.

If any discrepancy exists between the top of the filled tube and the specified height, it should be corrected by filling the geotube with additional dredged material or replacing the tube if it’s been compromised. However, remember that filling geotubes above the manufacturer’s specified height can cause the structure to fail.

3. ANCHORING THE GEOTUBE

The primary geotube and scour apron should be laid out on site in proper alignment and anchored in place to ensure they stay put when the geotube is filled. Anchor tubes are placed along the edges of the scour apron to secure the main tube to the foundation.

It’s important not to fill any portion of the geotube until the entire tube has been anchored to the foundation. Geotubes typically allow alignment deviations of plus or minus 600 millimeters.

4. OVERLAPPING THE TUBES

The end joints of geotubes should overlap or otherwise attach so no gaps exist between tubes. Beneath the geotube, the scour apron edges should also overlap to ensure the tube fabric doesn’t come in contact with the ground.

Geo Bag

Dhaka Geo Textile offers premium Geo Bags, engineered for superior performance in erosion control and shoreline protection. These high-quality, durable bags are made from geosynthetic materials designed to withstand harsh environmental conditions, making them an ideal solution for riverbank protection, coastal erosion control, and land reclamation projects. Our Geo Bags are filled with sand and strategically placed to create strong barriers against soil erosion and water damage. With advanced UV resistance, they provide long-lasting protection, ensuring the integrity of your projects in even the most challenging conditions. Available in various sizes and customizations, our Geo Bags are tailored to meet the specific needs of your project. Key Features: High-quality geosynthetic material for durability UV resistant for extended lifespan Ideal for erosion control and shoreline protection Customizable sizes and designs Easy to install and environmentally friendly Choose Dhaka Geo Textile’s Geo Bags for reliable and sustainable solutions to protect your environment and infrastructure from erosion and water-related damage.

Specification:

• Material: High-quality geosynthetic fabric (non-woven or woven)
• UV Resistance: Enhanced UV stabilization for long-term durability
• Size: Customizable; commonly available in sizes such as 0.5m³, 1m³, 1.5m³, and larger
• Filling Capacity: Suitable for sand or soil filling
• Weight: Varies based on size and material thickness
• Seam Strength: High-strength seams for superior holding capacity
• Tensile Strength: 15 kN/m to 30 kN/m (varies by material and application)
• Environmental Resistance: Resistant to chemicals, moisture, and degradation
• Color: Typically available in white, green, or custom colors upon request

Usages:

• Riverbank protection
• Coastal erosion control
• Land reclamation
• Flood control measures
• Infrastructure protection

Choose Dhaka Geo Textile’s Geo Bags for reliable and sustainable solutions to protect your environment and infrastructure from erosion and water-related damage.

How it works:

Geo Bags are designed to combat erosion by creating a strong, protective barrier. These bags are filled with sand or soil and strategically placed in areas prone to erosion, such as riverbanks, coastal shorelines, and flood zones. Once filled, the Geo Bags form a solid yet flexible structure that absorbs and redirects the energy from water flow, preventing soil from being washed away.

The bags interlock with each other, creating a stable, protective layer that withstands water pressure and environmental forces. Over time, the natural sediment accumulates between the bags, reinforcing the structure and enhancing its durability. Additionally, their UV-resistant material ensures long-lasting performance in outdoor environments, providing a cost-effective, low-maintenance solution for erosion control and land protection.

Faq:

What are Geo Bags made of?

Geo Bags are made of high-quality geosynthetic materials, typically non-woven or woven fabric, designed for durability, UV resistance, and long-term erosion control.

What are the common applications of Geo Bags?

Geo Bags are commonly used for riverbank protection, coastal erosion control, land reclamation, flood control, and shoreline stabilization projects.

How are Geo Bags filled and installed?

Geo Bags are usually filled with sand or soil. They are then strategically placed in areas prone to erosion. The filled bags interlock to create a solid, protective barrier.

Can Geo Bags be customized?

Yes, Geo Bags are available in various sizes and can be customized to meet specific project requirements.

Are Geo Bags environmentally friendly?

Yes, Geo Bags are designed to be environmentally friendly. They help reduce erosion and protect natural environments, contributing to sustainable land and water management.

How long do Geo Bags last?

Thanks to their UV resistance and durable material, Geo Bags are built to last for many years, even in harsh environmental conditions.

Do Geo Bags require maintenance?

Geo Bags require minimal maintenance once installed. Over time, natural sediment fills in between the bags, reinforcing their structure and stability.

What sizes are available for Geo Bags?

Geo Bags are available in a range of sizes, commonly from 0.5m³ to 1.5m³. Custom sizes can also be produced to fit specific project needs.

Can Geo Bags be used for flood control?

Yes, Geo Bags are highly effective for flood control measures, creating barriers to manage water flow and prevent flooding in vulnerable areas.

Where can I purchase Geo Bags?

You can purchase high-quality Geo Bags directly from Dhaka Geo Textile. Contact us for customized solutions and bulk orders.