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Sandvik DT923i tunneling jumbo improves accuracy, productivity

New Sandvik DT923i tunneling jumbo
New Sandvik DT923i tunneling jumbo

Sandvik Mining and Rock Solutions has launched the new Sandvik DT923i jumbo, its latest development drill rig for high power face drilling in tunnel and cavern excavations. Together with the new RD5 series high-frequency rock drills and rock tools designed for high-speed drilling, it delivers uncompromised accuracy and productivity.

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The new Sandvik DT923i is an automated i-series tunneling jumbo with two electro-hydraulic booms providing the highest levels of performance and reliability. The computer-controlled rig’s automatic drilling functions and operator-controlled boom positioning make it ideal for face drilling. As well as incorporating some of Sandvik’s latest developments in information technology solutions, the new rig uses Sandvik’s new RD5 series high-frequency rock drills. It has fast and automatic rod handling, an ergonomic cab and a powerful yet economic carrier, making it a comprehensive high-speed drilling solution. Designed to maximize operator safety and ergonomics, Sandvik DT923i also has high parts commonality with other Sandvik drill rigs. ?

The rig’s new SB110i uses Sandvik’s patent-pending stiff square shape boom technology, optimized with a front wrist structure that effectively provides up to 62 percent more side coverage whilst using a new fully proportional boom control for accurate and fast manual boom handling, delivering operational savings when tunneling. The rig also features an optional boom collision prevention and avoidance package.

Sandvik DT923i comes equipped with some of the latest developments in information technology-based face drilling automation. Subterra, one of the contractors for a subway extension project in Stockholm, Sweden, trialed Sandvik DT923i for the first three months of 2021.

“The rig has an innovative new IT solution that streamlines and automates the drilling process,” says Mattias Widenbrant, Assistant Project Manager for Arbetstunneln (Working Tunnel) at Subterra. “The new improved cabin creates a safer, cleaner working environment that is designed to reduce noise, keep dust out and optimize the viewing angle. All in all, it’s an innovative rig that enables us to work more flexibly and efficiently.”

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AMSJ April 2022