tunnel set

tunnel set

[′tən·əl ‚set]
(mining engineering)
Timbers 6 to 8 inches (15 to 20 centimeters) in diameter and of sufficient height to support the roof of the tunnel.
References in periodicals archive ?
A committee was formed in 2011 to restore the tunnel and construction has been ongoing ever since with the re-opening of the tunnel set for 12 August 2017 as part of the City's Rail to Trails Festival and it's Canada 150 celebrations.
Measuring 14 metres in length, each tunnel set used Alshor Plus shoring that was made up into specialist travellers.
MERSEYTRAVEL said the response to a trial of Fast Tag-only lanes at the Wallasey tunnel toll plaza has so far been "very positive" - with the Birkenhead tunnel set to follow if it proves successful.
ISTANBUL, Dhu-AlHijjah 24, 1434, Oct 29, 2013, SPA -- Turkey is for the first time connecting its European and Asian sides with a railway tunnel set to open Tuesday, completing a plan proposed about 150 years ago, AP reported.
High Speed 1, a high-speed railway linking London to the Channel Tunnel set in motion archaeological studies of Ebbsfleet Valley in northwest Kent.
The PWC event attracted a capacity crowd of high-ranking leaders from the business, environmental, labor, construction, transportation and planning communities to the Grand Ballroom of The Yale Club in New York City to cheer THE Tunnel set to launch in 2009.
A glazed tunnel set slightly off axis leads down through the treelined courtyard into the entrance lobby, one level below ground.
Tenders are invited for Supply Of Low Tunnel Set On Turn Key Basic
The new super sewer is being created to tackle the problem, it added, describing how the tunnel set to run under the city will transport the waste from homes to a sewage treatment works in Beckton, east London.
NORTH Tyneside has benefited from improving transport infrastructure in recent years with the newly dualled Tyne Tunnel set to further benefit the local economy in December.
The Rhondda Tunnel sets out the steps that need to be taken to progress the scheme and ecological surveys, including to establish the presence and identification of bats in the tunnel.