Edge Underground were recently called upon to help complete a microtunnelling crossing for the Murilla Shire Council in Queensland.
Lead contractor Shadforths Civil Contractors engaged Edge Underground to complete two road crossings and a rail crossing in order to complete the job. Each of the microtunnelling crossings required five precision horizontal bores to be completed for essential services including stormwater, sewer and water. For each crossing, these five bores were all completed from the same pit.
When the Edge Underground crew arrived on site, there was concern regarding the ground conditions of clay and rock, and there was concern regarding the varying diameter of the bores required for each crossing, which varied in size from 300-700mm. The crossings varied in length from 20-60m.
Time on this job was critical, with only three weeks to complete all the required bores.
Utilising the Vermeer AXIS guided boring system, the team at Edge were able to manage the quantity of bores and their complexity. Using a multi-configured cutter on the pilot shot, the team were able to get a good indication of the ground conditions they were dealing with – which in turn made completing the precision horizontal bores a more manageable task.
After arriving on site to a difficult job, Shadforths were extremely impressed when Edge completed the absolute precision installation on time and on budget, with minimum fuss.