RE: The Decline19 Mar 2023 08:36
To begin the Havieron decline construction, geotechnical engineers provided Mine Survey Plus surveyors a design profile for both excavation and the final shotcrete surface.
Hearn then used the Trimble Business Center Tunneling module to design the alignment. The resulting model is uploaded to the Trimble TSC7 controller with Trimble Access™ field software. Using the Trimble Access Tunnels module provides purpose-built tools for tunnel survey operations, according to the company.
Combined with the SX12 scanning total station, surveyors can automate the as-built data collection process and provide instant feedback to the excavator operators – typically one of the most time-consuming tasks in tunnel construction.
“We check the excavated profile using the Tunnel Auto Scan Function, and then scan existing conditions with the SX12 scanning total station at various cuts along the face“
From the horses mouth - the people that are controlling the Decline alignment
Various cuts doesn’t mean every cut.
A Total Station is an optical instrument, a computer on a tripod that measures angles, distances and is linked to the Mine control databases and software linked to the machines.
This chap is not going to go down everyday.
I can tell you from experience with these tools you can’t use them with wagons vibrating by, you have to reset them.
Setting out a spiral is very complicated especially when you can’t see round the bends and the site lengths are short.
You can see from the photos they’re mounted on permanent yellow stations so these don’t get lost.
To get a day by day length update is just not possible a lot of work by numerous people go into producing these models and relaying it back to the machines by that scan to surface software
https://im-mining.com/2022/10/31/trimble-scanning-solution-helps-steer-havieron-copper-gold-project-progress/
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