By Jetcrete Oz
The application of shotcrete is a risky business at the best of times, and when combined with the difficult working conditions of a tunnel, the potential hazards are multiplied. As underground and tunnelling projects become more common, collaborative partnerships between forward-thinking civil engineers, shotcrete contractors and technological innovators are becoming more prevalent in an attempt to improve not only the way shotcrete efficiency is measured, but also to reduce the level of risk for workers.Read more
PROCESSMONITOR LIVE combines the accuracy of LiDAR with advanced real-time data processing software, allowing Jetcrete to assess each surface prior to application and then measure and monitor the thickness of shotcrete as it is applied.
“PROCESSMONITOR LIVE safely provides us with reliable shotcrete measurements in under 3 minutes”
Before installing PROCESSMONITOR LIVE, Jetcrete relied on measuring applied concrete thickness using probes - a time consuming and inconsistent method. It also meant that operators had to return to a shotcreted surface following application, to check whether the desired thickness had been reached. In the event that it had not, the rig would have to be returned to each location to re-apply.
In addition to under-application, neither stamps nor probes allow for a rig operator to gauge if the substrate has been over-applied, meaning that the potential for wastage is high, regardless of how experienced the operator is.
SR-50 mounted on a spray rig
Another important consideration that arose in the consultation with Jetcrete was safety. From exposure to heavy machinery, potential rockfall and fall-out incidents, nozzlemen are constantly placed in harm’s way once out of the rig. One of the greatest benefits of LiDAR is its remote sensing capabilities, and the resulting ability to automatically assess an environment from a distance.
Pointcloud showing scan of applied shotcrete in a tunnel and the variations in thickness
PROCESSMONITOR LIVE is designed to be mounted to a shotcrete rig, meaning that the operator can carry out an inspection at each stage of the application process from the safety of the vehicle. Aside from the obvious immediate safety improvements, the remote nature of the system also helps to complete initial risk assessments with the added assurance for clients that additional safety measures will be taken whilst working on-site.
PROCESSMONITOR LIVE was also developed with user friendliness in mind. The system is connected to a touch screen tablet, which the operator uses to capture a colour-coded image showing the profile of the target surface in real-time. Each time a layer of shotcrete has been applied, the operator can repeat the scanning process and visualise any under-sprayed areas using the colour coded scale before the rig moves on.
PROCESSMONITOR LIVE is capable of measuring the applied thickness of shotcrete down to millimetre level, meaning that wastage, even on small-scale projects, can be mitigated.
With a commitment towards industry innovation, Jetcrete has developed a reputation for delivering projects on time and on budget, without compromising the safety of workers. Often, such levels of commitment come at cost, usually in literal terms. PROCESSMONITOR LIVE has allowed Jetcrete to outpace the competition when it comes to creating a more efficient service offering which will help to secure its reputation as one of the world’s leading shotcrete contractors in the mining sector.
PROCESSMONITOR LIVE has been designed for use in underground mining and construction environments
Headquartered in the UK, GeoSLAM is a global market leader in “go-anywhere” 3D mobile mapping technology. Our unique handheld technology is highly versatile and adaptable to all environments – especially spaces that are indoor, underground or difficult to access, providing accurate 3D mapping without the need for GPS.
Our technology is easy to use and within minutes customers can build a highly accurate 3D model of their environment. GeoSLAM was founded in 2012 as a joint venture between CSIRO (Australia’s National Science Agency and the inventors of Wi-Fi) and 3D Laser Mapping. Serving the surveying, engineering, mining, forestry, facilities and asset management sectors, GeoSLAM has an expanding network of over 78 distributors, with a presence in 57 countries across 6 continents.