Results
All barriers installed ahead of winter 2023, alleviating resident concerns
Minimised disruption to natural surroundings while ensuring robust protection
Cost-effective and timely delivery demonstrated adaptability and technical expertise
Enhanced resilience of the reserve and surrounding properties against future debris flows
Project
Solution
Proposed 20t excavator drill rigs for two sites, allowing efficient anchoring and barrier installation
Utilised a wagon drill and helicopter lifts at the foot-access-only site to reduce manual handling
Combined drilling, lifting, and installation methodologies to balance efficiency with environmental care
Project
Challenges
Restricted site access, particularly at locations only accessible by foot
Weight and handling complexity of barrier components in sensitive reserve areas
Concerns over environmental impact to streams and tree removal
Project
Overview
Severe storm events in late 2020 triggered debris flows that impacted properties below the Karehana Bay Scenic Reserve in Plimmerton, Wellington.
To mitigate ongoing risks to the community, Porirua City Council commissioned the installation of specialised debris flow barriers across three channels within the reserve. Access restrictions, environmental sensitivities, and steep terrain meant conventional construction methods were not feasible. Geovert developed and delivered tailored solutions to safely construct Geobrugg VX barriers, ensuring long-term protection for residents and infrastructure below.