HEATING AND POLLUTION MEASUREMENTS IN A RAILWAY TUNNEL ON THE CONGO-OCEAN RAILWAY LINE ---PAPERS PRESENTED AT THE 6TH INTERNATIONAL SYMPOSIUM ON THE AERODYNAMICS AND VENTILATION OF VEHICLE TUNNELS, DURHAM, 27-29 SEPT 1988

The saturated traffic on the congo-ocean railway line connecting brazzaville to pointe-noire led the agence transcongolaise des communications to make large works to revise the track through the mayombe mountain. Thus, a new route of 91 km including a 4623 km-long and 12 o/oo-gradient tunnel was opened in 1985. The underground facility, with a single track, allows intense traffic of passenger and heavy goods trains. Due to the load and frequency of trains on the one hand and heating and pollution problems resulting from the diesel traction on the other hand, a mechanical ventilation system using a gate and a fresh air blowing system was installed. This paper recalls the fundamentals and design of the adopted ventilation system, and describes in more detail the various field tests performed to check the behaviour and limits of the system. Comparative heating and pollution tests were performed with an artificial ventilation, then without, in order to emphasize the benefit afforded by the installation. The results derived allow a better knowledge of both the thermal behaviour of locomotives when they are proceeding through the tunnel and the re-establishment of ambient conditions in the tunnel following train transit to be obtained.(a)

  • Availability:
  • Corporate Authors:

    BHRA, The Fluid Engineering Centre

    Cranfield, Bedfordshire,   United Kingdom 
  • Authors:
    • BROUSSE, B
  • Publication Date: 1988

Language

  • English

Media Info

  • Pagination: p. 91-122
  • Monograph Title: PAPERS PRESENTED AT THE 6TH INTERNATIONAL SYMPOSIUM ON THE AERODYNAMICS AND VENTILATION OF VEHICLE TUNNELS, DURHAM, 27-29 SEPTEMBER 1988

Subject/Index Terms

Filing Info

  • Accession Number: 00487773
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 0-947711-49-X
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1989 12:00AM