![]() | This ![]() It is of interest to the following WikiProjects: | ||||||||||
|
![]() | The contents of the Micro tunnel shield method page were merged into Tunnel boring machine on 26 May 2018. For the contribution history and old versions of the redirected page, please see its history; for the discussion at that location, see its talk page. |
I redirected "bore tunnel" and "deep bore tunnel" here; they should be explained if not obvious. -- Beland ( talk) 05:57, 22 May 2008 (UTC)
User:72.151.7.53 previously inserted this uncited non-encyclopedic paragraph into the article, which I've removed and copied here for future reference:
I recommend that "tunnel-boring machine" (with the dash) is the proper way in addressing the name of the tool as well as being the name of the article. Why? When you say "tunnel boring machine" (without the dash), it might sound like a tunnel making a hole in the machine. 210.4.121.165 ( talk) 00:37, 18 September 2010 (UTC)
Please help me with sources for the following section. I wrote it according to personal knowledge. I had written a letter to Ariel Sharon as a 17 year old in 1981, after hearing a lecture about the Suez canal tunnel. (I received a personal reply to each of my points, saying that in his opinion even 5 years of ceasefire were worth not having a war (this was a year before the opening of the Lebanon war). Two years later as a young soldier, I was part of the construction crew at the IDF exhibit, and was at the (publicly televised) opening ceremony where Sharon spoke.
Since then I have followed with interest the development of tunnels in Israel. So here's what I wrote:
-- Military uses --
--- Middle East ---
In 1981 Egypt bought a tunnel boring machine from the German
Herrenknecht company, and dug a tunnel under the Suez Canal
[1]. This was claimed to be a military breach against the almost completed peace treaty, with Israel ceding the Sinai Peninsula to Egypt. Opposition continued to claim it would be used for rapid transport of heavy military equipment. These machines were later donated to the
PLO who dug bunkers in the
Beaufort Castle in Lebanon. A specially devised
Tunnel Busting Bomb was developed to damage these bunkers, but in the aftermath were discovered as non damaging.
During the [Operation Peace For Galilee]] In 1982, the IDF captured these machines, which were shown at a military exhibit a year later in Tel Aviv [2]. Ariel Sharon, then minister of defence, declared Israel would use these machines for civilian use. Subsequently the tunnels of Highway 60 to Gush Etzion, two tunnels in Jerusalem, four tunnels of the new high speed railway from Tel Aviv to Jerusalem have been built with these machines, as well as the new US underground base near Rosh Haain. [3].
-references-
This is just so you can read my proposal...
Thanks, Moshe פשוט pashute ♫ ( talk) 15:23, 15 February 2011 (UTC)
Are you sure that the largest diameter hard rock TBS was manufactured by The Robbins Company for Canada's Niagara Tunnel Project? It is only 14.4 mt diameter, whereas Martina, by the German company Herrenknecht and the Italian company CMA has a diameter of 15,62 mt. See The world's largest hard rock cutter: Herrenknecht TBM S-574 "Martina" 07/22/2011. -- Dejudicibus ( talk) 14:47, 26 December 2012 (UTC)
Additionally, the orlovski project was cancelled( http://lands-sale.com/real_estate/St_Petersburg_authorities_canceled_the_construction_42079), the biggest TBM in the world actually made is the Hitachi Zosen machine in Seattle at 17.45m diameter. ( http://tunnelbuilder.com/News/SR-99-TBM-docks-in-Seattle.aspx) — Preceding unsigned comment added by 124.157.115.225 ( talk) 21:58, 11 April 2013 (UTC)
Added a reference to the new TBM being used in Seattle, which many sources claim to be "the world's largest." However, it's not clear in which category that might be true. — Preceding unsigned comment added by 130.76.32.40 ( talk) 00:22, 18 June 2013 (UTC)
Uranium's average concentration in the Earth's crust is 2 to 4 parts per million by weight with 0.7% fissile isotope U235. This works out to 21 ppb. When U235 is bombarded with neutrons, heat is liberated heating the surrounding mass and additionally three more neutrons produced for aiding the nuclear reaction. This technique can be used in hard rock tunnel boring to increase the pace of boring and decrease power consumption drastically. The boring machine head can be fitted with low concentration uranium / uranium ore with neutron gun/generator. Every neutron hitting the U235 in uranium ore generate 3 neutrons which would be directed towards the hard rock to be excavated. When these neutrons hit the U235 (21 ppb present in the rock) they liberate heat locally inside the rock and create cracks due to thermal stress making the rock easier to break with hammers / cutters. The nuclear reaction further generates additional neutrons in the rock which would reduce the external supplementation of neutrons.
Thus generating neutrons externally and directing in to the rock material will achieve rock cutting which may be better and faster method. May respond. 49.204.214.236 ( talk) 16:13, 31 October 2013 (UTC)
I'm sure that it varies a lot depending the material being bored and the machine itself, but—how fast do these things go? Is it meters per day, tens of meters, hundreds of meters, etc? — Preceding unsigned comment added by 69.242.120.187 ( talk) 23:31, 13 March 2015 (UTC)
I'm sorry, but the TBM was NOT build, it was only designed, but the Orlovski tunnel was canceled (hope, temporarily), so the order to the TBM was canceled with the tunnel. Two 4-laned tunnels in 4th ring in Moscow were canceled too, so we have no project for the TBM now, maybe we will order it in a future, but we have many big transport projects in Moscow and St. Petersburg now, so we will have no money for the big tunnels in some next years. Of course, everything can change, but our present government don't look like people, who will start so expensive projects with so small profit for our highway system. Anyway, there is a fact, that the TBM wasn't build, it was only designed !!!
Please, correct the information, who is a native speaker of English - i don't want to correct the article with my mistakes.
PS if you have some questions about Moscow's tunnel projects, write me here, i'll visit the page in a near future and answer them. 78.24.28.186 ( talk) 12:03, 6 July 2015 (UTC)
The tunnel-boring machines that are shown and discussed in this article employ a cutting head that consists of cutting wheels that are mounted in a rotating face plate. However, the "History" section mentions only old machines that employed batteries of pneumatic drills. The "History" section should be updated to include the origin of the modern TBM. I'll try to do some research on the subject. VexorAbVikipædia ( talk) 07:53, 25 August 2015 (UTC)
I have removed the excessive usage of one group of authors/publications, that has been cite bombed in a thinly-veiled attempt to popularize these publications. Most of the added content was full of vague commonplaces and violated WP:NOTGUIDE - Wikipedia is not supposed to provide a "how to tunnel" handbook, or a platform to promote own views and research. GermanJoe ( talk) 10:16, 30 December 2017 (UTC)
These machines undoubtably require a lot of power, and the article is not complete until it addresses that aspect of the technology.
I assume most of the 19th-century machines were powered by coal-fired steam engines. Do modern machines use diesel engines? Here on the Talk page, the rumor of a nuclear-powered machine has been dealt with. Still, it would be interesting if the article touched on the feasibility of a nuclear-powered TBM. 2601:281:CC80:5AE0:6C61:A3D5:53F0:BC31 ( talk) 15:32, 8 December 2020 (UTC)
Insufficient content for a stand alone article and unsourced Kudpung กุดผึ้ง ( talk) 09:30, 13 April 2018 (UTC)
![]() | This ![]() It is of interest to the following WikiProjects: | ||||||||||
|
![]() | The contents of the Micro tunnel shield method page were merged into Tunnel boring machine on 26 May 2018. For the contribution history and old versions of the redirected page, please see its history; for the discussion at that location, see its talk page. |
I redirected "bore tunnel" and "deep bore tunnel" here; they should be explained if not obvious. -- Beland ( talk) 05:57, 22 May 2008 (UTC)
User:72.151.7.53 previously inserted this uncited non-encyclopedic paragraph into the article, which I've removed and copied here for future reference:
I recommend that "tunnel-boring machine" (with the dash) is the proper way in addressing the name of the tool as well as being the name of the article. Why? When you say "tunnel boring machine" (without the dash), it might sound like a tunnel making a hole in the machine. 210.4.121.165 ( talk) 00:37, 18 September 2010 (UTC)
Please help me with sources for the following section. I wrote it according to personal knowledge. I had written a letter to Ariel Sharon as a 17 year old in 1981, after hearing a lecture about the Suez canal tunnel. (I received a personal reply to each of my points, saying that in his opinion even 5 years of ceasefire were worth not having a war (this was a year before the opening of the Lebanon war). Two years later as a young soldier, I was part of the construction crew at the IDF exhibit, and was at the (publicly televised) opening ceremony where Sharon spoke.
Since then I have followed with interest the development of tunnels in Israel. So here's what I wrote:
-- Military uses --
--- Middle East ---
In 1981 Egypt bought a tunnel boring machine from the German
Herrenknecht company, and dug a tunnel under the Suez Canal
[1]. This was claimed to be a military breach against the almost completed peace treaty, with Israel ceding the Sinai Peninsula to Egypt. Opposition continued to claim it would be used for rapid transport of heavy military equipment. These machines were later donated to the
PLO who dug bunkers in the
Beaufort Castle in Lebanon. A specially devised
Tunnel Busting Bomb was developed to damage these bunkers, but in the aftermath were discovered as non damaging.
During the [Operation Peace For Galilee]] In 1982, the IDF captured these machines, which were shown at a military exhibit a year later in Tel Aviv [2]. Ariel Sharon, then minister of defence, declared Israel would use these machines for civilian use. Subsequently the tunnels of Highway 60 to Gush Etzion, two tunnels in Jerusalem, four tunnels of the new high speed railway from Tel Aviv to Jerusalem have been built with these machines, as well as the new US underground base near Rosh Haain. [3].
-references-
This is just so you can read my proposal...
Thanks, Moshe פשוט pashute ♫ ( talk) 15:23, 15 February 2011 (UTC)
Are you sure that the largest diameter hard rock TBS was manufactured by The Robbins Company for Canada's Niagara Tunnel Project? It is only 14.4 mt diameter, whereas Martina, by the German company Herrenknecht and the Italian company CMA has a diameter of 15,62 mt. See The world's largest hard rock cutter: Herrenknecht TBM S-574 "Martina" 07/22/2011. -- Dejudicibus ( talk) 14:47, 26 December 2012 (UTC)
Additionally, the orlovski project was cancelled( http://lands-sale.com/real_estate/St_Petersburg_authorities_canceled_the_construction_42079), the biggest TBM in the world actually made is the Hitachi Zosen machine in Seattle at 17.45m diameter. ( http://tunnelbuilder.com/News/SR-99-TBM-docks-in-Seattle.aspx) — Preceding unsigned comment added by 124.157.115.225 ( talk) 21:58, 11 April 2013 (UTC)
Added a reference to the new TBM being used in Seattle, which many sources claim to be "the world's largest." However, it's not clear in which category that might be true. — Preceding unsigned comment added by 130.76.32.40 ( talk) 00:22, 18 June 2013 (UTC)
Uranium's average concentration in the Earth's crust is 2 to 4 parts per million by weight with 0.7% fissile isotope U235. This works out to 21 ppb. When U235 is bombarded with neutrons, heat is liberated heating the surrounding mass and additionally three more neutrons produced for aiding the nuclear reaction. This technique can be used in hard rock tunnel boring to increase the pace of boring and decrease power consumption drastically. The boring machine head can be fitted with low concentration uranium / uranium ore with neutron gun/generator. Every neutron hitting the U235 in uranium ore generate 3 neutrons which would be directed towards the hard rock to be excavated. When these neutrons hit the U235 (21 ppb present in the rock) they liberate heat locally inside the rock and create cracks due to thermal stress making the rock easier to break with hammers / cutters. The nuclear reaction further generates additional neutrons in the rock which would reduce the external supplementation of neutrons.
Thus generating neutrons externally and directing in to the rock material will achieve rock cutting which may be better and faster method. May respond. 49.204.214.236 ( talk) 16:13, 31 October 2013 (UTC)
I'm sure that it varies a lot depending the material being bored and the machine itself, but—how fast do these things go? Is it meters per day, tens of meters, hundreds of meters, etc? — Preceding unsigned comment added by 69.242.120.187 ( talk) 23:31, 13 March 2015 (UTC)
I'm sorry, but the TBM was NOT build, it was only designed, but the Orlovski tunnel was canceled (hope, temporarily), so the order to the TBM was canceled with the tunnel. Two 4-laned tunnels in 4th ring in Moscow were canceled too, so we have no project for the TBM now, maybe we will order it in a future, but we have many big transport projects in Moscow and St. Petersburg now, so we will have no money for the big tunnels in some next years. Of course, everything can change, but our present government don't look like people, who will start so expensive projects with so small profit for our highway system. Anyway, there is a fact, that the TBM wasn't build, it was only designed !!!
Please, correct the information, who is a native speaker of English - i don't want to correct the article with my mistakes.
PS if you have some questions about Moscow's tunnel projects, write me here, i'll visit the page in a near future and answer them. 78.24.28.186 ( talk) 12:03, 6 July 2015 (UTC)
The tunnel-boring machines that are shown and discussed in this article employ a cutting head that consists of cutting wheels that are mounted in a rotating face plate. However, the "History" section mentions only old machines that employed batteries of pneumatic drills. The "History" section should be updated to include the origin of the modern TBM. I'll try to do some research on the subject. VexorAbVikipædia ( talk) 07:53, 25 August 2015 (UTC)
I have removed the excessive usage of one group of authors/publications, that has been cite bombed in a thinly-veiled attempt to popularize these publications. Most of the added content was full of vague commonplaces and violated WP:NOTGUIDE - Wikipedia is not supposed to provide a "how to tunnel" handbook, or a platform to promote own views and research. GermanJoe ( talk) 10:16, 30 December 2017 (UTC)
These machines undoubtably require a lot of power, and the article is not complete until it addresses that aspect of the technology.
I assume most of the 19th-century machines were powered by coal-fired steam engines. Do modern machines use diesel engines? Here on the Talk page, the rumor of a nuclear-powered machine has been dealt with. Still, it would be interesting if the article touched on the feasibility of a nuclear-powered TBM. 2601:281:CC80:5AE0:6C61:A3D5:53F0:BC31 ( talk) 15:32, 8 December 2020 (UTC)
Insufficient content for a stand alone article and unsourced Kudpung กุดผึ้ง ( talk) 09:30, 13 April 2018 (UTC)