Tunnel case studies

摘要

When it comes to the practical application of camera-based VSD in tunnels, the Sydney Harbour Road Tunnel - the largest privately-funded public works project in Australia - is a good example.rnWhen the Sydney Harbour Tunnel was constructed back in 1992, it was fitted with the best fire protection systems available at that time. These measures consisted of: thermal point detectors spaced every 15m over each lane; more than 40 CCTV cameras (an additional 48 cameras were installed in 2000) in both tunnel tubes; and a manual deluge system operated from a dedicated 24-hour manned control room.rnThe catalyst for the move to implement a new VSD solution came from an ongoing programme of intensive training and monthly maintenance by the Sydney Harbour Tunnel Company.