| 词条 | Sierra Leone Government Railway |
| 释义 |
This article is part of the history of rail transport by country series The Sierra Leone Government Railway operated in Sierra Leone from 1897 to 1974. It was unusual in that it formed a national railway system constructed solely to a {{RailGauge|2ft6in|lk=on}} narrow gauge. Such a narrow gauge was usually confined to feeder railways. HistoryBeginningsThere were a number of early proposals for a railway in the British colony of Sierra Leone dating from 1872, including a proposal for a trans-Sahara railway, all of which came to naught. Finally in 1893 a proposal financed by the Liverpool Chamber of Commerce was adopted, and surveying commenced. Survey parties confronted many difficulties, especially disease, which delayed completion of the survey. OpeningConstruction commenced from Freetown in 1896, and the first section of railway was opened to Wellington (7 miles) by March 1897. Subsequent openings were:
BranchesOther lines were also constructed. A short branch of {{convert|5.5|mi|km}} length was built in 1903 from Freetown to Hill Station, at 748 feet (228 m) above sea level. The line allowed Europeans to live in the healthier hills area above Freetown, but with competition from motor cars was closed in 1929. A more substantial branch was built from Bauya Junction to Makeni (84 miles/135.2 km) in 1914. It was later extended to Kambai (104 miles/167.4 km), but subsequently cut back to Makeni in 1930. At this time total route length was {{convert|311|mi|km}}. World War IIThe railways assumed increased importance in World War II. Apart from moving mineral resources from the interior to the coast, the railway was also important in supporting fighting in North Africa. Fighter aircraft were shipped to the end of the line, where they were assembled and flown on to Egypt. RenewalThe equipment of the railway was renewed in the 1950s, with the introduction of diesel locomotives, and the purchase of some 155 new freight wagons. Both freight and passenger traffic was increasing during this decade. Independence came to Sierra Leone in 1961, and as an independence gift the United Kingdom gave 45 new passenger coaches. ClosureIncreased road traffic and changes in government policy in the 1960s saw a decline in traffic, and various proposals for its future. They included a new branch to serve a bauxite mine, and converting to a wider gauge. However the report of the United Nations Special Fund, which recommended closure, was adopted. The Makeni branch was closed in 1968, followed by the Kenema - Pendembu section in 1971. Further closures as far as Bo occurred in 1973, and final closure in 1974. Stations{{main|Railway stations in Sierra Leone}}LocomotivesSteamThe first locomotives supplied to the railway were two 0-6-0T built by the Hunslet Engine Company and supplied in 1897. These were quickly followed by a 2-6-2T design from Hunslet, a design that proved very successful and enduring, a large number were built between 1898 and 1920. Further locos of this design continued to be supplied throughout the steam era, the last two being built in 1954. Elements of this design were used in the construction of a locomotive for the Welsh Highland Railway known as "Russell". Five 2-8-2T from Hunslet were supplied in 1906, to be followed by two 4-8-0 tender locos from Nasmyth, Wilson and Company in 1910. Further 4-8-0 locos were built by North British Locomotive Company and Hawthorn Leslie and Company, bringing the total to 17 by 1921. 1926 saw the introduction of 2-6-2+2-6-2 Garratts from Beyer, Peacock and Company, eliminating double heading of a 2-6-2T with a 4-8-0. The 2-8-2T had proved unsuitable, and all were withdrawn by the mid-1920s. World War II saw great demands placed on the railway, and its importance was demonstrated by the railway being supplied with a number of new locomotives. Six new Garratts were supplied in 1942, and twenty 4-8-0s were built by W. G. Bagnall and Andrew Barclay Sons & Co.. Additionally, six 2-8-0 locomotives that had been built in Switzerland were brought in from the South India Railways. In an effort to further increase capacity, five of the earlier 2-6-2+2-6-2 Garratts were converted to a 2-8-0+0-8-2 wheel arrangement so as to increase adhesion. Experience with these modified Garratts influenced the final steam class purchased by the railway. In 1956 fourteen modern 4-8-2+2-8-4 Garratts were purchased from Beyer-Peacock.[1] These locos increased the maximum load over 1:50 grades from 200 tons (203 tonnes) to 270 tons (274 tonnes). DieselIn the meantime the railway had turned to diesel traction. The first were purchased in 1954, being three 145HP, 20 ton 0-8-0s built by Hudswell Clarke primarily for shunting duties, followed by five more in 1960. A class of larger diesels was supplied by the same maker between 1958 and 1961. The class consisted of twenty-four 225HP 29 ton 2-8-2s for mainline use. These locos were a limited success, speeding up operations and reducing costs, but were not without their problems. Batteries supplied on the locos were not large enough to start the engines, and a van with additional batteries had to accompany them as a tender. Overall the railway had difficulties in maintaining the diesel locos, and steam locos continued to operate. At closure the railway possessed five operating steam locos, and four diesels. EngineeringThe railway was built with 30lb rail, limiting axleload to 5 tons. Some of the extensions were built as "tramways", with rail weight reduced to 20 and even 15 lb. In an effort to increase axle loadings and the speed limit above 20 mph (32.2 km/h), some sections of the line were rebuilt with 40 lb rail in the 1950s. Most of the line was built with a 1 to 50 gradient, but some sections were as steep as 1 to 39. The Hill Station line had a gradient of 1 to 22. There were 139 bridges with a span of over 20 feet (6.1 m) on the line, the longest being of six spans and 716 feet (218.24 m) across. PreservationIn WalesFollowing the railway’s closure, in 1975 the last of the 2-6-2T Hunslet locomotives to be built for the railway, No. 85, together with four of the carriages built by the Gloucester Railway Carriage & Wagon Co in 1961, were purchased by the Welshpool and Llanfair Light Railway (W&LLR) and shipped to Wales, arriving in August that year. After overhauls, two of the carriages entered service on W&LLR metals in 1977 followed by the locomotive in 1978. After a further overhaul the locomotive commenced a new tour of duty in 1992. Significant firebox repairs were carried out in 2000 and then it ran again until 2010 when it was withdrawn, being in need of a new boiler. In 2011 the locomotive went on display at the National Railway Museum, Shildon, before return to Llanfair Caereinion by way of a nationwide tour in 2017. With the W&LLR preferring to operate balcony-ended carriages the Sierra Leone vehicles fell out of favour in the late 1990s; however two of them were refurbished in 2007-2008 and have since appeared on occasional special workings. In Sierra LeoneIn Sierra Leone a collection of rolling stock was retained at the former railway workshops to form a museum. Locos included one of the 4-8-2+2-8-4 Garratts, a Hunslet tank, and a couple of the diesel locos. Several coaches were also kept, including the Governor's coach, and a coach specially prepared for the visit of Queen Elizabeth II in 1961. Through the years of civil strife and war this collection disappeared from sight and it was feared it had been destroyed. However the collection survived despite the workshops being used as a centre for displaced persons. Following the initiative of a British army officer, Colonel Steve Davies, restoration of the equipment commenced in 2004. The former President of the Republic of Sierra Leone, Alhaji Dr. Ahmad Tejan Kabbah, visited the workshops site and indicated his support for restoring the museum and preserving the railway heritage of Sierra Leone. The Sierra Leone National Railway Museum is open in Cline Town, Freetown. As of 2016 museum has seen ongoing improvements by a dedicated team of supporters which includes Colonel Steve Davies. See also{{Portal|Trains|Sierra Leone}}
ReferencesNotes1. ^RailwaysAfrica September 2009, p14 Bibliography{{refbegin}}
External links{{commons category|Rail transport in Sierra Leone}}
4 : 2 ft 6 in gauge railways in Sierra Leone|Rail transport in Sierra Leone|History of Sierra Leone|1897 establishments in Sierra Leone |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。