The role of a survey team on underground projects is one of continuous demand that ranges from setting geodetic control and collecting initial site surveys to guiding the excavation, drill and blast equipment, monitoring for convergence and final inspection of the tunnel construction. Conventional methods of completing these tasks often require multiple pieces of equipment, large survey teams and time-intensive post processing of data. The Trimble ® SX12 Scanning Total Station simplifies the process while opening new doors of opportunity in the challenging tunnel environment. The combination of advanced total station technology and laser scanning coupled with automated data collection, analysis and reporting capabilities offers tunnel surveyors a next generation improvement in meeting on-site demands while achieving unprecedented accuracy, speed and productivity. The SX12 Scanning Total Station combines a high accuracy robotic total station and 3D laser scanner in one instrument. For tunnel projects, accurate measurements for traversing and control can be performed alongside general construction set out, and as-built scanning.
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There are several key technology elements in the SX12 that make it the ideal tool for tunnel surveys.įirst, the total station leverages Autolock ® and Finelock technology to automatically lock on to prisms even in target-congested environments reducing the need for manual pointing and errors.
#Adjust station and backsight trimble business center manual# This capability is especially useful when performing tunnel convergence measurements which typically involve measuring a large number of prisms in the narrow tunnel corridor. The SX12’s Finelock functionality ensures the instrument reliably locks on to each prism as it collects measurements. Next, with the smallest laser spot size (3 mm diameter EDM laser spot at 50 m) in the industry, the SX12 provides a precise and clear set out of tunnel construction points. #Adjust station and backsight trimble business center manual#.
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