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FAQ

Please see below for frequently asked questions, if you have other questions, please contact us directly, we will answer for you at any time
Q:

Can the construction plan be customized according to the actual project?

A:

The construction plan can be customized according to the actual project.

Q:

What equipment is needed when laying Silt Curtain?

A:

Need to pay attention to climate change and tidal changes

Q:

How long can you guarantee the quality of your Silt Curtain/geo tube/geotextile products?

A:

Silt Curtain/geo tube /geotextile can be guaranteed for one year in direct sunlight below 25 degrees north and south latitude

Q:

What equipment is needed to lay geotextiles?

A:

Labor force/Handheld sewing machine/Power supply

Q:

What equipment is needed to lay geo tube?

A:

High power mud pump/flushing water gun

Q:

What should workers pay attention to when constructing Silt Curtain/geo tube /geotextile?

A:

Need to pay attention to climate change and tidal changes

Q:

What is a geotextile tube (geotube) and how does it work?

A:

A geotextile tube (often called a geotube) is a large, high-strength woven fabric container that is filled with sand, sludge, or dredged material by pumping. The permeable fabric lets water drain out while retaining the solids, so the tube gradually compacts into a stable, engineered structure.

It works in three steps:

1.Fill — a slurry (sand, sediment, or sludge mixed with water) is pumped into the tube through inlet ports.
2.Dewater — water drains through the fabric; solids consolidate inside.
3.Form — the filled tubes stack into breakwaters, revetments, dewatering cells, or reclamation bunds.
HOKBG geotextile tubes use UV-stabilized circular-filament filter fabric, are supplied as one-piece molded units, and have factory-sewn seams retaining about 70% of the original fabric strength — so they hold shape and pressure in demanding marine conditions.

Q:

What is a silt curtain and where is it used?

A:

A silt curtain (also called a turbidity barrier) is a floating barrier that hangs below the water surface to contain suspended sediment and keep it from spreading during dredging, piling, or reclamation work.

It is typically used for:

• Marine and nearshore construction (piers, bridges, reclamation)
• Dredging and channel maintenance
• Lake, reservoir, and river cleanup
• Coral-reef and mangrove protection zones
• Containment of floating weeds such as Sargassum
HOKBG silt curtains use the same UV-resistant woven fabric with optional ballast chains or sand tubes at the bottom, and are available in surface, subsurface, and full-depth (riverine) configurations.

Q:

What is the difference between a geotube and a geobag?

A:

Both are geotextile containers, but they differ in size, shape, and use:
• Geotube — long, tubular, filled by pumping slurry; used for large-scale coastal protection, dewatering, and reclamation.
• Geobag — smaller, pillow-shaped, usually filled by manual or machine loading; used for small revetments, scour protection, and edge detailing.
In short: geotubes handle volume and length; geobags handle detail and small spots. Many projects use both — geotubes for the main structure, geobags for corners and finishing.

Q:

Can geotextile tubes be used for artificial beach construction?

A:

Yes. Geotextile tubes are a proven method for building and protecting artificial beaches and resort shorelines:
• They form the substructure / underwater berm that widens the beach and stops sand loss.
• They replace hard seawalls with a softer, beach-compatible profile.
• They reduce long-term maintenance versus rock revetments.
HOKBG has supplied tubes for resort and island shoreline projects where the goal was a stable, natural-looking beach with lower upkeep. For a private resort, the usual approach is a buried tube core capped with sand, so guests see beach, not fabric.

Q:

How do silt curtains protect coral reefs during marine construction?

A:

Silt curtains protect coral by trapping suspended sediment before it reaches the reef. Construction (dredging, piling, reclamation) stirs up fine sediment that, if it settles on coral, blocks sunlight and smothers polyps.

A properly installed curtain:
• Forms a barrier between the work area and the reef.
• Lets suspended solids settle inside the contained zone instead of drifting.
• Keeps turbidity within permitted limits for the protected area.
For reef projects HOKBG recommends full-depth curtains with secure bottom contact and regular inspection, so the barrier stays sealed against currents.

Q:

How are geotextile tubes used in port land reclamation?

A:

In port and land reclamation, geotextile tubes are deployed as containment bunds that define and build new land from dredged or hydraulic-fill material:
• Tubes are placed end-to-end to form perimeter bunds.
• Dredged slurry is pumped inside; water drains, solids stay.
• The bunds create enclosed cells that are then filled to grade.
Benefits versus rock or concrete: lower material cost, faster placement, and no quarry dependency. HOKBG tubes have been used in reclamation work such as Saudi Arabia's Jazan Economic City, where large volumes of fill had to be contained reliably in a marine environment.