Heathrow Airport is one of the world's busiest airports; in December 2019 alone more than 6.6 million passengers flew to its 203 destinations worldwide. The collapse of NATM tunnels at Heathrow Airport : a report on the investigation by the Health and Safety Executive into the collapse of New Austrian Tunnelling Method (NATM) tunnels at the Central Terminal Area of Heathrow Airport on 20/21 October 1994 — 1. publ. Collapse of NATM tunnels at Heathrow Airport. It's hard to imagine, then, the chaos that ensued following a series of tunnel collapses which left a giant crater between its two runways in 1994. In 1999, civil engineering contractor Balfour Beatty and tunnelling advisor Geoconsult were prosecuted. Heathrow Express Rail Link Collapse. The engineering disaster caused no casualties, but it wreaked havoc for passengers and occurred perilously close to the Piccadilly London Underground line. The report is expected to say that attention was focused on saving money and increasing progress, rather than on the risks of building the tunnels beneath the airport. The Heathrow Express continues to run a fast line between Paddington and Heathrow Central, taking just 15 minutes to get to Terminals 2 and 3 and six minutes more to Terminal 5. The Health and Safety Executive's long-awaited assessment of the accident at Heathrow in October 1994 followed detailed investigations and legal action. It was fined £1.2 million. Print. Heathrow Express Rail Link Collapse. An official report into the collapse of three tunnels for the Heathrow Express rail link is expected to condemn the project's managers. Underground work began in 1994 to connect Heathrow with Paddington station. A later examination revealed the collapse had narrowly avoided affecting the Piccadilly Line and its passengers. Bolu Crossing. Construction of tunnels beneath Heathrow Airport for London’s new Heathrow Express Rail Lin, to connect the Airport with Paddington Station, began in 1994. The tunnels were being built as part of the Heathrow Express project which would connect the airport to central London, Subscribe to our FREE daily newsletter for a round-up of the biggest stories from across Surrey. The tunnel collapses were due to several contributing factors, according to investigation findings published in an HSE report in 2000. Both bodies were also fined £100,000 in costs. A catalogue of design and management errors, poor workmanship and quality control were at the root of the catastrophic tunnel collapse at London's Heathrow Airport in 1994. Balfour Beatty pleaded guilty to violating two counts of the Safety at Work Act, 1974. On October 21, 1994 the airport fell victim to what the Health and Safety Executive (HSE) previously described as "the most notable catastrophic event in the UK in recent years". In the early hours of Friday, October 21, night shift workers were ordered to evacuate the tunnels. Balfour Beatty Civil Engineering was later fined £1.2m, then a record. The accident caused months of delay to construction work on parts of the Jubilee line on the London Underground, until engineers were granted permission to continue using the same tunnelling method. The Health and Safety Executive's long-awaited assessment of the accident at Heathrow in October 1994 followed detailed investigations and legal action. Technische Informationsbibliothek (TIB) - TechNat, The collapse of NATM tunnels at Heathrow Airport : a report on the investigation by the Health and Safety Executive into the collapse of New Austrian Tunnelling Method (NATM) tunnels at the Central Terminal Area of Heathrow Airport on 20/21 October 1994, Sondersammlungen und Nachlässe TIB Sozialwissenschaften, TIB Technik/Naturwissenschaften: Einzel-Arbeitsplätze, Archiv der TIB / Universitätsarchiv Hannover, Großbritannien, Health and Safety Executive, Buch The three parallel tunnels, around 30 metres below the surface, were being built with the New Austrian Tunnelling Method (NATM). Repairs totalled £150m - three times the original construction cost. Zu diesem lizenzpflichtigen Artikel gibt es eine Open Access Version, die kostenlos und ohne Lizenzbeschränkung gelesen werden kann. The sunken ground affected car parks and caused nearby buildings to crumble too. An official report into the collapse of three tunnels for the Heathrow Express rail link is expected to condemn the project's managers. 32 Heathrow Express collapse . "People were not properly evaluating the risks", Wednesday, 5 July, 2000, 07:08 GMT 08:08 UK, ----------------------------------------------------------------------------------. Geoconsult was fined £500,000. Die Open Access Version kann inhaltlich von der lizenzpflichtigen Version abweichen. 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Links to more UK stories are at the foot of the page. On the third day the ground stabilised, but the incident had created a dramatic crater in the airport between both runways.