ABG Cavidrain Invert
ABG Cavidrain invert is a engineered geocomposite drainage system designed to efficiently manage water flow within culverts and drainage channels.
ABG Cavidrain Invert is a high-performance geocomposite drainage solution developed specifically for tunnel invert drainage and underground infrastructure. Combining a durable cuspated core with a geotextile filter, it creates a controlled drainage pathway that efficiently manages water flow while preventing sediment build-up within tunnel systems.
Designed to perform in demanding underground environments, it helps reduce standing water, protect tunnel linings, and minimise long-term maintenance requirements. Its robust construction resists abrasion and hydraulic forces, making it suitable for both new tunnel construction and rehabilitation projects.
As a prefabricated alternative to traditional drainage methods, Cavidrain Invert enables faster installation, improved site safety, and more efficient delivery on complex underground projects.
Typical applications include:
- New tunnel construction
- Cut & cover tunnels
- Drill and blast tunnels
- TBM tunnels
- Metro underground stations
- Cable tunnels
- Highway tunnels
- Railway tunnels
Frequently Asked Questions
Cavidrain Invert is used in culverts, stormwater channels, and drainage systems where maintaining flow and preventing sediment build-up is critical.
Yes, it is well suited for upgrading or rehabilitating existing culverts by improving hydraulic performance and reducing maintenance needs.
The geocomposite structure promotes efficient flow while limiting areas where sediment can settle, helping keep channels clear.
Yes, Cavidrain Invert is designed to perform in demanding hydraulic conditions, with materials selected for durability and resistance to wear.
Benefits & Features
- Improves flow and reduces sediment build-up
- Fast installation without concrete or aggregates
- Durable in high-flow, abrasive environments
- Reduces maintenance and extends asset life
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