Image:MCL-046-Burnley-inbye-montage-1a.jpg

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Melbourne City Link, Burnley tunnel: inbye east of Swan St shaft, July 1997

Photographs taken (and poorly stitched together) by Ecb.

This is the working face of the top heading, not far from the deepest point of the Burnley tunnel at Swan St shaft. Primary lining consisted of shotcrete and steel arches.

The spoil is 400 million year old Silurian rock; the puddle in front of the face was probably one of the earliest indications that all was not well with the geotechnical engineer's calculations of water pressure.

The remainder of the face (bench approx 4 m deep) was excavated at a later stage.

If you want a more detailed picture or a negative scan, please leave a message on my talk page. Assuming I'm still contributing I will respond.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers.

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