When the going gets tough

Keeping a close eye on a vital and extensive infrastructure complex in the Northern Territory around the clock and in virtually all weather conditions has become a reality thanks to Trimble technology, UPG (Ultimate Positioning Group) expertise and the foresight of a highly regarded surveying group.

Earl James and Associates (EJA), which was established in 1982, have employed the Trimble T4D system operating with two S9 robotic total stations, supplied by UPG.

The system has enabled automated monitoring of a concrete structure’s subsidence in the Northern Territory since the middle of last year.

The system is configured to measure 70 monitoring prisms installed along the structure every hour around the clock with the results streamed live via the internet.
From this, results and data can be viewed from any connected device for analyses, and configured to send email and SMS alerts should movement be identified that exceeds set parameters.
EJA installed the equipment and system which was then followed by UPG’s T4D ‘guru’ Brent Dawson coming to the site to do training and assist with the system’s configuration.

There were a number of hurdles to overcome in the early stages due to poor internet connection at the site and power issues.

UPG worked with EJA around the clock to ensure delivery of the product met client expectations and our own Brent Dawson was instrumental in problem shooting.
The hurdles were overcome and the system has proven to be reliable despite the extremely harsh conditions the instruments are operating in.

In fact, the system didn’t so much as miss a beat during a recent cyclone in the region, even continuing to stream data while crews cleaned up the site, post-cyclone.

Also, at the time of preparing this article, one of the S9 Instruments currently has 6900 hours continuous operation without issue.

EJA’s Franck Delmas said while Trimble had been its preferred supplier, and in turn UPG, for many years, the service and support was a big part of why the firm continues to work with UPG.

“Brent Dawson really went above and beyond for us to ensure the system was delivering what we needed,” he said.

“The UPG team’s flexibility and drive to deliver what it promises is second to none. We couldn’t be happier.”

Franck also said the use of Trimble S9 robotic stations meant they could be utilised for other work after this project was completed.

“We have a two-year contract on this monitoring project. If that isn’t extended, we know we will be able to put the S9’s to good use in other areas of our business,” he said.

Find out how UPG  can help your operations – call us on 1800 800 UPG.

One of the 70 low profile monitoring prisms on site. These are specifically designed to allow vehicles to run over them.
Custom built weather-proof housing and high gain cellular antenna.
Location on site.

Ingenuity to create solutions clients can’t live without


Working for tier-one construction companies, Todd Foster’s focus on high-accuracy, innovative spatial solutions started with high-accuracy monitoring on two large dam projects.

After the second dam was complete, Todd decided to venture out on his own by starting Milestone Survey. By blending traditional survey techniques with innovative ways of problem solving, Milestone Survey has grown into a strong player in the Australian market – even in a slowing economy.

Todd has built a company that uses innovation, talented employees, and leading-edge survey equipment to deliver value to its clients by anticipating the clients’ needs. It’s this ingenuity and ability to create solutions that clients can’t live without that will ensure the success of this new venture, Milestone Spatial, for a long time to come.

See how he has done that in the latest Trimble technology&more magazine.

Satellite data monitoring environmental impacts

As we use the Earth’s resources, we inevitably impact it, in particular resources that are acquired from under the surface, like coal seam gas (GCS). Currently limited evidence is available on the environmental impacts of GCS.1

To gain a clearer understanding of the environmental impacts caused by GCS production, a project is now underway in NSW. It began in March 2016 and will be run for four years to monitor movements of the Earth’s surface. It is being conducted by Geoscience Australia and the NSW Department of Industry’s Division of Resources in the town of Camden.

The project will use a combination of new and historic satellite imagery and GNSS data to measure any ground subsidence. It will also use a network of 20 geodetic monitoring stations to check for indications of increased seismic activity.

camdenThese monitoring stations consist of a mounted GNSS receiver and a pair of radar reflectors, which will provide easily detectable reference points in the satellite imagery. The GNSS data will be transmitted in real time and measured monthly to provide an independent dataset of ground movements.

Research results from the Camden environmental monitoring project will be published on the NSW Department of Industry Resources & Energy website.

Read more about the Camden project on the Spacial Source blog, or find out more about the monitoring solutions Trimble offers on our website.

 

1 The coal seam gas debate, Dr Alex St John, Science, Technology, Environment and Resources

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