Robbins TBM:
A Robbins Main Beam TBM was re-launched in Indianapolis in summer 2016.
Robbins TBM:
The 6.2 m diameter Main Beam machine has set multiple world records on its first set of tunnels at the Indianapolis Deep Rock Tunnel Connector.
Robbins TBM:
The machine, refurbished for the Shea-Kiewit (S-K) Joint Venture, set records in its size class for “Most Advance in One Day” (124.9 m), “Most Advance in One Week” (515.1 m) and “Most Advance in One Month” (1,754 m).
Robbins TBM:
The refurbished Robbins machine includes a back-loading cutterhead, 19-inch disc cutters, and variable frequency drives (VFDs).
Robbins TBM:
Originally built in 1980, the TBM was previously used on at least five earlier hard rock tunnels including New York City’s Second Avenue Subway.
Robbins TBM:
The 12.2 km long DRTC and the network of DigIndy tunnels are being built by Citizens Energy Group in order to comply with a US Environmental Protection Agency (EPA) mandate.
Robbins TBM:
The EPA-mandated DigIndy tunnels will reduce combined stormwater and wastewater overflows into the city’s tributaries along the White River.
Robbins TBM:
A crew member for the S-K JV hooks up the cutterhead to be lowered into a deep shaft.
Robbins TBM:
A deep shaft used for the TBM re-launch.
Robbins TBM:
The network of remaining DigIndy tunnels will span 28 km below the city.
Robbins TBM:
40 km of tunnels will work to clean up the areas rivers (including the completed DRTC).
Robbins TBM:
The DRTC involved construction in tight, 90-degree radius curves. Robbins conveyor systems with curve idlers aided in muck removal.
Robbins TBM:
The DRTC drive was completed in July 2014. Extensions to the DRTC were completed in 2015.
Robbins TBM:
A worker surveys the completed sections of the DigIndy Tunnels.
Robbins TBM:
Construction of the DigIndy Tunnels is currently ahead of schedule by nearly a year and under its projected 2012 cost of USD $2.1 billion.
Robbins TBM:
Refurbishment work on the Robbins Main Beam TBM, originally built in 1980.
Robbins TBM:
A view through the TBM back-up system.
Robbins TBM:
Workers prepare for the launch of the Robbins TBM on the 8,530 m long White River Tunnel.
Robbins TBM:
About one quarter of the way into the White River Tunnel Drive the Robbins TBM will drive a bifurcation known as Pogues Run, measuring 2,735 m long.
Robbins TBM:
The machine will then be backed up to the bifurcation point before continuing north for completion of the White River Tunnel in late 2018/early 2019.
Robbins TBM:
Workers prepare the starter tunnel for the TBM launch.
Robbins TBM:
Workers prepare the starter tunnel for the TBM launch.
Robbins TBM:
The Robbins TBM will continue on to bore the Fall Creek Tunnel, a 5,954 m continuation of the White River Tunnel.
Robbins TBM:
The Robbins TBM will continue on to bore the Fall Creek Tunnel, a 5,954 m continuation of the White River Tunnel.
Robbins TBM:
Workers prepare the TBM back-up system for launch.
Robbins TBM:
A view up one of the deep shafts built for the DigIndy tunnels.
Robbins TBM:
Workers prepare the TBM back-up system for launch.
Robbins TBM:
A large crew at the surface preps TBM and tunnel components for the launch.
Robbins TBM:
A large crew at the surface preps TBM and tunnel components for the launch.
Robbins TBM:
A large crew at the surface preps TBM and tunnel components for the launch.
