Mt Martha Sewer Duplication

L&D Micro Tunnelling were awarded the drilling contract for 900 meters of Tunnelling to provide a well needed Sewer Duplication throughout Mt Martha, Victoria.

The 280mm Poly line was welded into full strings the length of each bore. Once our team had broken through with the Drill head we would extract the head from the retrieval shaft and attach a pull back tool to install the pipe as were retracted our drilling rods.

Bore size: 380 & 400 mm OD

Pipe installed: 280 Poly & HOBAS GRP 376mm Jacking pipe

Ground Conditions: Sandy clay & Reefy rock

Shaft Depths: 2 - 7 meters


January 2021




Free Boring

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