https://www.mdu.se/

mdh.sePublikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Fire incidents during contruction work of tunnels - Model-scale experiments
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik. SP Brandteknik. (MERO)ORCID-id: 0000-0001-6758-6067
2010 (engelsk)Rapport (Annet vitenskapelig)
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.

sted, utgiver, år, opplag, sider
Borås: SP Sveriges Tekniska Forskningsinstitut , 2010.
Serie
SP Report, ISSN 0284-5172 ; 2010:86
HSV kategori
Forskningsprogram
energi- och miljöteknik
Identifikatorer
URN: urn:nbn:se:mdh:diva-22831ISBN: 978-91-86622-36-7 (tryckt)OAI: oai:DiVA.org:mdh-22831DiVA, id: diva2:664614
Tilgjengelig fra: 2013-11-15 Laget: 2013-11-15 Sist oppdatert: 2019-12-12bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Person

Lönnermark, Anders

Søk i DiVA

Av forfatter/redaktør
Lönnermark, AndersIngason, Haukur
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric

isbn
urn-nbn
Totalt: 308 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf