Next Generation of Hybrid TBMs for Mixed Ground

The use of hybrid TBMs in a mixed and unpredictable underground environment is increasing. This report concentrates on the advances achieved by hybrid TBMs, focusing on what is likely the most common type: A cross between a hard rock single shield TBM and an EPB.

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Issue 2013-03

Next Generation of Hybrid TBMs for Mixed Ground

In a mixed and unpredictable underground environment the increasing use of hybrid TBMs is one that goes with the territory. Where multiple machine types might have once been used for different...

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Issue 2009-08 EPB Technology

EPB Technology opens up the soft ground Tunnelling Range

EPB design and assembly are governed by multiple variables, no matter the machine diameter – a sentiment that rings true for a large Robbins EPB TBM currently being assembled at Mexico City’s new...

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Issue 2013-04 EPB Cutters

The Next Revolution in EPB Cutters – New Cutter Designs make an Impression in Mixed Ground

Six TBMs including three Robbins EPBs are tackling on this project in the underground of Mexico. The emergency project is needed urgently to prevent potential flooding of Mexico City’s wastewater...

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Issue 2014-08 China?/?Malaysia

Klang Valley MRT Project: Breakthrough of CREG EPB TBMs

Designed and manufactured by China Railway Engineering Equipment Group Co., Ltd. (CREG), the Tunnel Boring Machines (TBMs) CR-51 and CR-50 have successfully completed two 2814 m long tunnels in Kuala...

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Issue 2011-05

Innovations and Limitations of Two Long-Standing Soft Ground TBM Designs

EPB and Slurry TBMs, first developed in the 1960s and refined in the decades following, were designed around very different philosophies. Though both prototypes originated in Japan, EPBs were founded...

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