Micro tunnelling record set in New Zealand with Herrenknecht rig

Southern hemisphere construction contractor McConnell Dowell has set a new Direct Pipe world record, for the longest single drive by a micro tunnel boring machine (MTBM) on Watercare’s Snells Algies wastewater pipe and outfall project.

In New Zealand, contractor McConnell Dowell has used a Herrenknecht micro tunnel boring machine to set a record for a Direct Pipe drive

31 July 2020
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The project team and ‘Piper' the Herrenknecht-made MTBM set a record of 2,021m on 28 July 2020, surpassing the previous New Zealand record by 92m.

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