To Access the Coal:Unique TBM tacklesDecline Drives

When a location in remote Northeastern Australia near the town of Moranbah was designated as a new, “greenfield” site for a coal mine, the owner – the mining company Anglo American – was concerned about the project schedule and the necessary time to access the coal. A deep coal seam required access via decline tunnels within a quick time frame. To achieve this, the mine opted for the use of a tunnel boring machine, marking the first use of TBM technology in the Queensland coal industry.

The TBM would develop both drifts, contributing positively to stability, safety, and schedule. The tunnels, however, called for a highly unique Dual Mode EPB/Rock TBM design, and a machine that could operate even in the presence of potentially hazardous methane gas.

Coal Mine Construction

The Grosvenor Decline Tunnel is a 1.95 billion Australian dollar coal project and is part of an initiative aimed at tripling Anglo American’s metallurgical output to 20 million metric tons by the year 2020. The new mine targets the Gonyella Middle coal seam, and is expected to produce five million tonnes of...

Related articles:

Issue 2012-04 Austria

Brenner Base Tunnel: Exploring the Periadriatic Seam

As from late 2011 a roughly 2 km long tunnel is being driven to explore the largest Alpine fault zone, the Periadriatic Seam, as part of the 64 km long Brenner Base Tunnel project. It will take some 2...

more
Issue 2021-05 Mexico

Rectangular Rock Mining Machine for Flat Invert

Employed by Mexico’s oldest silver mine, Fresnillo Plc, the MDM5000 is boring a mine access tunnel in andesite and shale with quartz intrusions that has defied earlier attempts using roadheaders. The...

more
Issue 2012-07 Austria

Brenner Base Tunnel: Ampass Access Tunnel

Following completion of the 1.8 km long Mauls access tunnel, working is currently forging ahead on the Wolf and Ahrental (2.4 km) access tunnels. After lengthy preparations, work commenced on the 1.4...

more
Issue 2010-01 New Products

Polymer-modified sprayed concrete from Wacker Chemie AG

Whether in tunneling, mining, hydraulic engineering or road construction, the application of sprayed concrete entails rebound – a significant time and cost factor. For this reason, Wacker Chemie AG...

more
Issue 2020-05 Microtunnelling

Robbins Double Gripper TBM Guided by NAV24 Gyro System

When Bradshaw Construction (BCC) of Eldersburg, Maryland (USA) was awarded the Niles Avenue Sewer Improvement project in Atlanta, they had to decide on the navigation system to be used. Their 72’’...

more