In 2020 we completed the 7th and final round of rockfall protection work on the Johnsonville line between tunnels 1&2 for Kiwirail. Our first project here was in 2010 and since then we have built 5 active mesh drapes and 2 monitored rockfall alert fences. Each project requires the team to work directly above the active commuter line. Pressure on! The team had to drill 70 anchors into loose rock without hitting the trains that pass through every 10 minutes. The last 3 active drapes have all utilised GRP corrosion proof bars and Geofabrics mesh with the latest PVC galmac coating for minimal future maintenance.
NZTA, WSP, and Capital Journeys chose Abseil Access to undertake essential rockfall remediation works on SH1 through the Ngauranga gorge. Due to the critical and busy highway, the works were undertaken over the New Year holiday low traffic period. While others were partying on the beaches our team of 15 were committed to making NZ roads safer. Over 2000m2 of mesh and over 100 anchors had to be installed in a 15-day period in a compact shared work space. It was an epic logistic challenge that the whole crew accomplished and successfully delivered. Webster Drilling and Exploration Limited, Total Site Works, and Kapiti Heliworx provided essential help.