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How about a table listening tunnels by their maximum rock coverage?
Like this: http://www.japan-tunnel.org/nttj/statistical_data/index2.html
Coccodrillo 18:59, 24 October 2007 (UTC)
Metro tunnels should be excluded from the main table, in my opinion. They could stay in the separate table, if you like. Metro tunnel as I said are always near the surface and made by several shorter tunnels. There are hundreds of subways, it's useless to add the lenght of all their tunnels. Maybe some particular tunnels could be added (the BART tunnel under the Bay in San Francisco, as example). Coccodrillo 08:18, 1 December 2006 (UTC)
Any ideas on what should be done with this article, compared with List of tunnels?-- ZorroIII 09:04, 2 October 2005 (UTC)
Surely LEP's 27 km tunnel warrants inclusion.
The CERN tunnel is one example. Another is the networks of tunnels in places where they were used for warfare or as escape routes. Would those be included in such a listing??
I think the middle table, named "Vehicular" should be skipped. The bottom table ("Top 100") covers those tunnels anyway. Tables of other kinds of tunnels could be a good addition.-- Blue Elf 20:26, 8 December 2005 (UTC)
According to my sources ( Stamps.fo and the Danish travel guide Turen går til Færøerne of 2005), the tunnel is on 6,300 m and thus some places more in top of the ranking. Where is the 6,100 m in the article from? -- Arne List 19:54, 3 May 2006 (UTC)
Why are subways excluded from this? It seems entirely arbitrary, and excludes some very long tunnels. At the very least, it needs it's own category. Until relatively recently, the Morden to East Finchley section of the London Underground's Northern Line was the world's longest tunnel.
Also, I think we should exclude tunnels that have not been opened, are or have just been proposed. FrFintonStack 18:30, 25 May 2006 (UTC)
Above, a number of reasons have been given why not to have them in a list, no one good. They are too shallow, they are too long and too many, etc. There are many railway tunnels also but few so long. I can agree one thing, there is very hard to find info about the tunnel lengths. I have used maps and satellite images for some of them, but that could count as original research, that Wikipedia should not be the only place that has published some infomation. -- BIL 22:27, 24 May 2007 (UTC)
This tunnel has two (already existing) approaches on the north; measured by the longer Innsbruck bypass approach it will be 62,700 m, thus passing Gotthard. [ BBT technical data (in German)] Gotthard, for its part, has an extension under consideration (the Axentunnel, which would increse its overall length to some 75,000 m. As this is only under consideration, it is too early to include in the table. Aldenrw ( talk) 19:06, 6 October 2010 (UTC)
Here is a proposal on how to structure the tunnel lists.
We would have a navigation template at the top of each article, linking to the others.
Another idea: the distances should be km (mi). This convention is generally followed (eg the road tunnels on this page don't even list the imperial measurement), but not everywhere on this lists. It makes sense because most of the tunnels use km, ie they are built in countries using metres.--
Commander Keane
13:58, 1 June 2006 (UTC)
We should avoid water pipes and tunnels, otherwise we could consider including gas and oil pipelines, often buried, thousands of km. A requirement could be that it shall be used to transport people. / BIL 18:45, 25 June 2006 (UTC)
How come that we right now can have one (but only the longest) water supply tunnel, when we can't have metro tunnels. -- BIL ( talk) 16:12, 12 November 2008 (UTC)
I would say that many water aqueduct tunnels are most definitely tunnels and not just pipes: constructed using tunnelling techniques like hard-rock drilling and blasting, sited tens or even hundreds of feet below the surface. A problem might be distinguishing which sections of a particular aqueduct are a continuous tunnel (q.v. the Catskill_Aqueduct article, which gives distances of various types of tunnelling but doesn't state whether those are continuous sections or aggregate totals). I do think that water tunnels are more qualified for listing than metro/subway tunnels as metros are frequently constructed as many separate segments of tunnel. Perhaps for the purpose of metro tunnels, segments that are clearly bored as one tunnel section, even if stations are present, could be measured. An example of this would be the Stockholm Metro Blue Line, which is a bored rock tunnel with the stations constructed using mining techniques rather than excavation from surface access. ( talk) 21:16, 29 September 2009 (UTC)
Name | Location | metres ( miles) | Type | Year | Comment |
---|---|---|---|---|---|
Seikan Tunnel | Tsugaru Strait, Japan | 53,850 (33.5) | Railway | 1988 | longest tunnel |
Channel Tunnel | English Channel, England - France | 49,940 (31.1) | Railway | 1994 | |
Hakkoda Tunnel | Hakkoda Mountains, Japan | 25,810 (16.5) | Railway | 2010 | longest land tunnel |
Lærdal | Laerdal - Aurland, Norway | 24,510 (15.2) | Road | 2000 | longest road tunnel |
St. Gotthard | Alps, Switzerland | 16,918 (10.2) | Road | 1980 |
I tentatively shortened the Length in metres ( miles) and the Year Completed in an attempt to have less empty space in the table. For now I do not have line breaks inside the table cells.-- Klaus with K 13:58, 3 July 2006 (UTC)
I have started to merge the tables, so far railway and road included. Metre values mostly taken from http://home.no.net/lotsberg/data/rail.html and http://home.no.net/lotsberg/data/tun10.html as the old metric values were rounded, some even having suffered metric->imperial->metric conversion. Some metre values look to me like still rounded to the nearest 10m or 100m. Table cutoff a function of my available time today, see notes inside the tables.-- Klaus with K 20:29, 7 July 2006 (UTC)
As new tunnels are being built and completed, each single new entry added to a table would require the change of all subsequent rank numbers which is a maintenance pain. Hence no ordinal numbers please.-- Klaus with K 10:46, 1 August 2006 (UTC)
We should merge the two tables for Road tunnels. The question is which format ? I waited for a principle regarding the format of other tables, but there is no real agreement between them. I assume I will use the format of the merged table, without the "type" column. In princle as the "Vehicular" but metres and a comment column. / BIL 11:13, 1 August 2006 (UTC)
Hi BIL, I see you start editing. Remarks from my side:
So far my constructive criticism for tonight.-- Klaus with K 18:52, 2 August 2006 (UTC)
The Seikan Tunnel hosts two cape gauge (1067 mm) tracks, so it is useless to write "longest metre-gauge tunnel" about the Vereina.
I'm trying to write dedicated pages for some tunnel, such as the Vereina Tunnel. Someone should correct my English. Coccodrillo 13:38, 29 November 2006 (UTC)
Tagged since over a year, I have a bold moment and shall tidy up this page. Noting that people have invested work into the non-merged sections, I'll move this content to a page to be named List of further tunnels by length and leave it to others if they feel this leftover sections should be reorganised differently.-- Klaus with K 16:43, 24 May 2007 (UTC)
I don't think this needs to be in metres. There is no need for 5 figure accuracy here. An extra decimal can be added in order to seperate an tunnels that are close in length. Agree/Dissagree? Shniken1 02:18, 27 September 2007 (UTC)
Disagree Technical information is given in metres, the plans are of better accuracy than mere metres, and I do not see a reason why one should downgrade information. Adding decimals later means sourcing information again, giving different numbers of decimals makes for an incoherent appearance of the table. --
Klaus with K
09:49, 27 September 2007 (UTC)
Disagree per Klaus with K, anyway for correct length sorting we need at least 4 figure accuracy --
Jklamo
16:42, 27 September 2007 (UTC)
This tunnel is at planning stage. Some intermediate access on the french side have ben built, but nothing on the italian side and it is not sure that the main tunnel will be built. There have been seveal announces, but nothing has been done untill today. Coccodrillo ( talk) 22:19, 5 February 2008 (UTC)
This edit [2] <smal>(Removing water ans [ sic] electricity tunnels. If someone does not like this, please explain on the discussion page where it is defined that they should be include). I don't have an objection, but it would be useful to have a definition for what this list is; currently going by the tunnel it is merely tunnels - in use. The two tunnels:
Should we rename this to "transport tunnels"? There are other interesting examples; Eg.
— Sladen ( talk) 20:44, 9 February 2009 (UTC)
I would like to add a tunnel to this list! Called the Orange River Fish Tunnel located in South Africa. Second longest water tunnel in the world at 82.5Km (51Miles) and 5.35m (17.5ft) in diameter —Preceding unsigned comment added by Ajax0121 ( talk • contribs) 00:43, 26 February 2009 (UTC)
As it's performing an alphabetic sort instead of numeric. I've read Help:Sorting and thought hidden keys must be the way to go but can't get it to work. Any wiki gurus in the house able to shed light on how to fix this up? Oosh ( talk) 06:18, 4 January 2010 (UTC)
The Brenner Base Tunnel will connect underground with the existing Innsbruck bypass Tunnel, for a total length of 62.7 km. Thus, the total length will exceed that of the Gotthard Base Tunnel by over 5km. Seems obvious to me. Comments?
Brenner Base Tunnel project page
Aldenrw ( talk) 21:31, 19 February 2010 (UTC)
WP calls for the use of templates such as cite web, cite book, etc. These raw web sites are practically useless. Also, this IS the English WP. I realize we are writing about an international topic, but in English. Sometimes there is no other recourse than to use sites in the original language. These are, as I say, useless to most English speakers. This is one of the drawbacks to being a speaker of a dominant language. Most Europeans speak at least another, but you don't realize English is in most cases our only language. I've heard the academics rail about this ignorance all my life and yet it is just as true today as it was in 1980 (sure, Dave. 1950?). To us, Reykjavik is still rinkey-dink. I recast the first ref to show you what might be done with Internet resources. If you could manage something like it for the rest of the gobbledeygook I am sure most native English speakers would appreciate that greatly, as this is quite an interesting article. As for the non-Roman alphabets - forget it, I am sorry to say. Try to get something in English. Dave ( talk) 10:48, 27 February 2010 (UTC)
The final break through in the east tube occurred on 15 October 2010. The break through in the west tube isn't expected until April 2011.
People keep adding this tunnel to the list of tunnels in use. It may not be completed until 2017 so is not in use.
StuZealand ( talk) 21:22, 15 October 2010 (UTC)
The Kárahnjúkar hydroelectric plant in Iceland involves a tunnel network with 72 kilometers of tunnels combined, however the longest distance from one opening to another is 39.7 kilometers. Here is a description, here is an overview of all the tunnels and here is a map where the tunnels are marked with blue lines. Which number should be used in the list? -- 85.220.101.221 ( talk) 18:12, 16 October 2010 (UTC)
Adept for new record -- W.Rebel ( talk) 22:42, 16 November 2010 (UTC)
When the top table, World's longest tunnels (in use), first loads with the page it is ordered by length from longest to shortest. Well and fine. If you click to reverse the length order, it appears to be fine. But if you click again to return to longest>shortest the top 2 entries (Delaware Aquaduct and Päijänne Water Tunnel) disappear. Refreshing the page returns to proper state. ◦◦derekbd ◦◦my talk◦◦ 03:43, 9 July 2011 (UTC)
I'm unsure as to the requirements for inclusion but should this list possible include (still functioning) qanats? The Wardak Qanat with 8m seems to qualify, as does the Turpan water system which seems to include qanats up to 10km long (the German wiki has a source for that). The Gadara qanat was an impressive 94km but probably doesn't qualify as it's no longer operational. Akerbeltz ( talk) 23:01, 13 August 2013 (UTC)
Thirlmere Aqueduct is not continuous (see File:Thirlmere Aqueduct Higher Wheelton.jpg or [3]) and it is more likely pipeline than tunnel. I think it should be excluded from this list. -- Jklamo ( talk) 17:48, 17 November 2013 (UTC)
This point is so obvious that I am astounded that Thirlmere was ever included in this article. Flying Stag ( talk) 23:18, 29 November 2013 (UTC)
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Is the Seikan Tunnel still the "Longest railway tunnel excluding urban metro lines with intermediate stations" now that the Gotthard Base Tunnel has been completed? — Preceding unsigned comment added by Scotteaton92 ( talk • contribs) 14:53, 1 June 2016 (UTC)
Of all tunnels the lengths are expressed as a number with 1...3 digits before the decimal. Probably kilometers are stated. 29,900 m (18.6 mi) should obviously be 29,900 km (18.6 mi). One mile is 1609m not 1.609m. It is probably a bug in the convert script : \{\{convert|57091|m|mi|1|abbr=on}} which introduces a decimal point in the meter value. It should evaluate 57091m and not 57.091m. S k a t e b i k e r ( talk) 18:35, 1 June 2016 (UTC)
The convert template uses the convention of a decimal point "." and a comma "," for decimal grouping. see Decimal_mark#Examples_of_use. Scotteaton92 ( talk) 20:16, 1 June 2016 (UTC)
An IP added this to the Channel Tunnel: "Second longest railway tunnel until Gotthard tunnel was opened." This is true, but not really notable. We do not list "second anything" in general, unless there is a particular reason. The IP's edit comment claimed to be reverting me -- so I assumed I had made a mistake -- but in fact the version I removed was a claim to be the longest. Just for the record. Imaginatorium ( talk) 07:18, 8 June 2016 (UTC)
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Guangzhou Metro Line 3, at 57930 m, is listed as the "longest metro/rapid transit tunnel". Immediately below that, the Gotthard Base Tunnel, at 57104 m, is described as "...also the world's longest transit tunnel." Those statements can't both be true, can they? Or am I missing something? -- Hux ( talk) 20:31, 12 October 2021 (UTC)
It isn't clear to me what this is supposed to mean. For instance, the Taiwan Strait Tunnel Project is currently a member of this list, but the article states "The project is not considered viable due to a lack of interest from the Taiwanese, staggering costs and unsolved technical problems". I would have interpreted "advanced planning stage" as a project that is, at the very least, expected to obtain approval in the foreseeable future. Scleractinian ( talk) 05:55, 12 August 2022 (UTC)