myGeobrugg
Systems
Year of installation
2025
Initial situation
Debris flow events in 2004 and 2010 (Opus Consultants) raised concerns about future occurrences. These events brought boulders, soil, and mud, damaging bridge piers—essential structures—and some vehicles nearby. Repair works followed. To address ongoing concerns, the Public Works Department began a geomorphological susceptibility study at Gunung Chante in 2010. Since then, the client (PLUS Highway) has implemented precautionary measures, such as installing rain gauges with alert systems at several critical locations.
Collective data indicate that observed rainfall intensity has gradually increased over time, with peak rainfall events often triggering the alert system, particularly during the monsoon season. There is growing concern that high-intensity upstream water flow could transport debris through the channel in volumes surpassing its current capacity—a scenario with historical precedent. This presents a significant risk to the bridge piers, which are crucial to the national transport network.
Description
During the review of the overall catchment at Gunung Chante, we used the DEBFLOW design tool to demonstrate how a debris-flow barrier could protect the area of concern as an emergency mitigation measure prior to the monsoon season. Given the urgency of implementing this mitigation before the onset of the monsoon, the Debris Flow Barrier UX180-H6—featuring a Dynamic Pressure Resistance Class of 180 kN/m²—was selected to retain an anticipated volume of up to 4'500 m³.
Alpha Pinnacle completed the installation completed within three months, reducing future debris flow hazards in the future. Together with Geobrugg, the installation inspection was conducted in 2026 to ensure the barrier structure performs as designed.
Country/Region
Malaysia
Customer
Contractor
Protected object
Road
Corrosion protection
GEOBRUGG SUPERCOATING
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