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The Swan View Tunnel is a former railway tunnel located on the southern side of the Jane Brook valley in the outer Perth suburb of Swan View in the John Forrest National Park on the edge of the Darling Scarp. After its closure as a railway tunnel, it reopened as part of a rail trail. Prior to the construction of tunnels and the sinking of the Subiaco railway station in 1999, the Swan View Tunnel was the only tunnel on the Western Australian railway network. ==Construction== Swan View Tunnel was built on an alignment which replaced the original Eastern Railway passing through Smiths Mill, (now Glen Forrest), and Mundaring. The project to build the new line, including the Swan View Tunnel, was managed by the Engineer-in-Chief of the Western Australian Government Railways, C Y O'Connor. Work began in 1894, with the two bores meeting on 18 April 1895. The tunnel opened on 22 February 1896.〔(Eastern Railway Deviation ) Heritage Council of WA〕 The unstable nature of the jointed granite, along with clay seams, caused difficulties during construction of the tunnel. A masonry-lined face prevented rock falls, but reduced the inner diameter. The tunnel's small diameter combined with the steep gradient (1:49) to cause smoke accumulation. Incidents involving near-asphyxiation of train crews started in 1896, and continued throughout the tunnel's operating life.〔Tobin, Jack 1962 "The Swan View Tunnel" ''The Westland'' September 1999 p.7-11〕 The first serious incident of this nature was in 1903.〔''Swan Express'' 2 October 1909 p.3a, 4a. Articles on ventilation problems in the tunnel〕 The tunnel was 13 chains (858 ft, 262m) long.〔http://nla.gov.au/nla.news-article37787153〕 The tunnel's design was incompatible with the ASG class Garratt steam locomotives used by the Western Australian Government Railways in the 1940s. The worst accident in the tunnel was on 5 November 1942, when both drivers and firemen were asphyxiated by carbon monoxide, one driver dying, when a fully laden double-header train passed through the tunnel at walking pace.〔Duxbury, George (2001) Rail against time ''Landscope'', Autumn 2001, p.37-40〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Swan View Tunnel」の詳細全文を読む スポンサード リンク
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