mdh.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Fire incidents during contruction work of tunnels - Model-scale experiments
Mälardalen University, School of Business, Society and Engineering. SP Brandteknik. (MERO)ORCID iD: 0000-0001-6758-6067
2010 (English)Report (Other academic)
Abstract [en]

The report describes a series of model scale tests (1:40 scale) describing the situation before breakthrough in a tunnel during construction. In such a situation this means that there is only one access tunnel, the rest is a system of tunnels with no connection to the surface other than through the inlet tunnel. The tests were carried out in order to investigate the effects of smoke spread and ventilation in a tunnel during construction. The tunnel was tested during different ventilation conditions, lengths and slope. The tunnel consisted of an access part which simulated the access tunnel to the main tunnel. The access tunnel was sloped and the main tunnel was horizontal, directed in two equal distances from the access tunnel. The main tunnel had two dead ends, and a ventilation system that was provided through an air duct in the ceiling. The air duct outlet length and location was varied in the tests. A total of 36 tests were performed. The fire source was a propane burner, delivering a heat release rate equivalent to a full-scale fire of 10 MW. Fibreboard blocks, of different sizes, drenched with heptane were also used to represent the heat release rate of a construction machine.

The main findings concerned the effect of the ventilation on the fire development. If the fire occurs before the breakthrough and the fire is too small it will be difficult to obtain fresh air from the access entrance and the fire will decreases in intensity and finally extinguish due to lack of oxygen caused by consumption of oxygen and recirculation of vitiated products back to the fire.

Place, publisher, year, edition, pages
Borås: SP Sveriges Tekniska Forskningsinstitut , 2010.
Series
SP Report, ISSN 0284-5172 ; 2010:86
National Category
Engineering and Technology
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-22831ISBN: 978-91-86622-36-7 (print)OAI: oai:DiVA.org:mdh-22831DiVA: diva2:664614
Available from: 2013-11-15 Created: 2013-11-15 Last updated: 2014-01-27Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Lönnermark, AndersIngason, Haukur
By organisation
School of Business, Society and Engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

Total: 116 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf