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Geology Scienceá á á
@GeologyyScience
·
23h
Coal mine collapses in Northern China ð¨ð³
#geology #science #china #mine #coal #collapse #earth #nature #planet
https://twitter.com/i/status/1708209116622037321
On Sunday, October 1, 2023 at 3:51:50â¯PM UTC-4, a a wrote:
Geology Scienceá á á
@GeologyyScience
·
23h
Coal mine collapses in Northern China ð¨ð³
China has a real bad record with coal mines.
https://www.nytimes.com/2023/02/23/world/asia/china-mine-inner-mongolia.html
Maybe they\'re not aware of the concept of angle of repose, especially as regards open pit mines, and should learn more about it. Seems they have massive landslides ALL THE TIME there. If it\'s not a coal mine, it\'s a road or village.
#geology #science #china #mine #coal #collapse #earth #nature #planet
https://twitter.com/i/status/1708209116622037321
On Monday, October 2, 2023 at 12:12:05â¯PM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 3:51:50â¯PM UTC-4, a a wrote:
Geology Scienceá á á
@GeologyyScience
·
23h
Coal mine collapses in Northern China ð¨ð³
China has a real bad record with coal mines.
https://www.nytimes.com/2023/02/23/world/asia/china-mine-inner-mongolia..html
Maybe they\'re not aware of the concept of angle of repose, especially as regards open pit mines, and should learn more about it. Seems they have massive landslides ALL THE TIME there. If it\'s not a coal mine, it\'s a road or village.
#geology #science #china #mine #coal #collapse #earth #nature #planet
https://twitter.com/i/status/1708209116622037321
Or they are on the ring of fire.
https://education.nationalgeographic.org/resource/plate-tectonics-ring-fire/
Techinically speaking they aren\'t, but they are close enough that traditional chinese architecture is earthquake tolerant in a way that traditional European architecture isn\'t.
--
Bill Sloman, Sydney
On Sunday, October 1, 2023 at 11:24:50â¯PM UTC-4, Anthony William Sloman wrote:
On Monday, October 2, 2023 at 12:12:05â¯PM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 3:51:50â¯PM UTC-4, a a wrote:
Geology Scienceá á á
@GeologyyScience
·
23h
Coal mine collapses in Northern China ð¨ð³
China has a real bad record with coal mines.
https://www.nytimes.com/2023/02/23/world/asia/china-mine-inner-mongolia.html
Maybe they\'re not aware of the concept of angle of repose, especially as regards open pit mines, and should learn more about it. Seems they have massive landslides ALL THE TIME there. If it\'s not a coal mine, it\'s a road or village.
#geology #science #china #mine #coal #collapse #earth #nature #planet
https://twitter.com/i/status/1708209116622037321
Or they are on the ring of fire.
https://education.nationalgeographic.org/resource/plate-tectonics-ring-fire/
Techinically speaking they aren\'t, but they are close enough that traditional Chinese architecture is earthquake tolerant in a way that traditional European architecture isn\'t.
The February landslide occurred in Inner Mongolia.
When the sides of the pit are perilously close to a slide, the vibrations from heavy machinery or any explosives will be enough to set it off. Unless the pit was excavated from some kind of stable bedrock, they need to knock those sides down, cart away the loose debris, and make the pit more of a bowl shape.
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From: Fred Bloggs <bloggs.fredbloggs.fred@gmail.com
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From: Fred Bloggs <bloggs.fredbloggs.fred@gmail.com
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Subject: =?UTF-8?Q?Coal_mine_collapses_in_Northern_China_=F0=9F=87=A8=F0=9F=87=B3_?=
From: a a <manta103g@gmail.com
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On Tuesday, October 3, 2023 at 12:30:36â¯AM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 11:24:50â¯PM UTC-4, Anthony William Sloman wrote:
On Monday, October 2, 2023 at 12:12:05â¯PM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 3:51:50â¯PM UTC-4, a a wrote:
Geology Scienceá á á
@GeologyyScience
·
23h
Coal mine collapses in Northern China ð¨ð³
China has a real bad record with coal mines.
https://www.nytimes.com/2023/02/23/world/asia/china-mine-inner-mongolia.html
Maybe they\'re not aware of the concept of angle of repose, especially as regards open pit mines, and should learn more about it. Seems they have massive landslides ALL THE TIME there. If it\'s not a coal mine, it\'s a road or village.
#geology #science #china #mine #coal #collapse #earth #nature #planet
https://twitter.com/i/status/1708209116622037321
Or they are on the ring of fire.
https://education.nationalgeographic.org/resource/plate-tectonics-ring-fire/
Techinically speaking they aren\'t, but they are close enough that traditional Chinese architecture is earthquake tolerant in a way that traditional European architecture isn\'t.
The February landslide occurred in Inner Mongolia.
When the sides of the pit are perilously close to a slide, the vibrations from heavy machinery or any explosives will be enough to set it off. Unless the pit was excavated from some kind of stable bedrock, they need to knock those sides down, cart away the loose debris, and make the pit more of a bowl shape.
If you are carrying on about angle of repose, you want a conical shape. In reality, the angle of repose depends on the material exposed, and the shape is going to depend on the layers of materials being dug through, which I don\'t know anything about, and isn\'t likely to be easily accessible to the public because it is relevant to the value of the mine.
That place looks like it needs to be limited to 3 in 12. Sounds like a lot of work but look at the mess they have now. They need to cart away loose debris anyway and recover and repair a bunch of infrastructure, and convince people who now have no confidence whatsoever in their judgment to go back to work there.
Sounds like a difficult job. It\'s not easy to get mining companies to move stuff that nobody will pay for, and incipient disasters are about as worrying as anthropogenic global warming - which is to say, not enough,
https://en.wikipedia.org/wiki/Angle_of_repose
--
Bill Sloman, Sydney
On Monday, October 2, 2023 at 9:51:08â¯AM UTC-4, Anthony William Sloman wrote:
On Tuesday, October 3, 2023 at 12:30:36â¯AM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 11:24:50â¯PM UTC-4, Anthony William Sloman wrote:
On Monday, October 2, 2023 at 12:12:05â¯PM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 3:51:50â¯PM UTC-4, a a wrote:
Geology Scienceá á á
@GeologyyScience
·
23h
Coal mine collapses in Northern China ð¨ð³
China has a real bad record with coal mines.
https://www.nytimes.com/2023/02/23/world/asia/china-mine-inner-mongolia.html
Maybe they\'re not aware of the concept of angle of repose, especially as regards open pit mines, and should learn more about it. Seems they have massive landslides ALL THE TIME there. If it\'s not a coal mine, it\'s a road or village.
#geology #science #china #mine #coal #collapse #earth #nature #planet
https://twitter.com/i/status/1708209116622037321
Or they are on the ring of fire.
https://education.nationalgeographic.org/resource/plate-tectonics-ring-fire/
Technically speaking they aren\'t, but they are close enough that traditional Chinese architecture is earthquake tolerant in a way that traditional European architecture isn\'t.
The February landslide occurred in Inner Mongolia.
When the sides of the pit are perilously close to a slide, the vibrations from heavy machinery or any explosives will be enough to set it off. Unless the pit was excavated from some kind of stable bedrock, they need to knock those sides down, cart away the loose debris, and make the pit more of a bowl shape.
If you are carrying on about angle of repose, you want a conical shape. In reality, the angle of repose depends on the material exposed, and the shape is going to depend on the layers of materials being dug through, which I don\'t know anything about, and isn\'t likely to be easily accessible to the public because it is relevant to the value of the mine.
What other shape could you have?
That place looks like it needs to be limited to 3 in 12. Sounds like a lot of work but look at the mess they have now. They need to cart away loose debris anyway and recover and repair a bunch of infrastructure, and convince people who now have no confidence whatsoever in their judgment to go back to work there.
Sounds like a difficult job. It\'s not easy to get mining companies to move stuff that nobody will pay for, and incipient disasters are about as worrying as anthropogenic global warming - which is to say, not enough.
Just one look at that shit-for-brains Inner Mongolian operations manager told me all I needed to know about the kind of people they have running that show.
On Tuesday, October 3, 2023 at 11:33:15â¯PM UTC+11, Fred Bloggs wrote:
On Monday, October 2, 2023 at 9:51:08â¯AM UTC-4, Anthony William Sloman wrote:
On Tuesday, October 3, 2023 at 12:30:36â¯AM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 11:24:50â¯PM UTC-4, Anthony William Sloman wrote:
On Monday, October 2, 2023 at 12:12:05â¯PM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 3:51:50â¯PM UTC-4, a a wrote:
Geology Scienceá á á
@GeologyyScience
·
23h
Coal mine collapses in Northern China ð¨ð³
China has a real bad record with coal mines.
https://www.nytimes.com/2023/02/23/world/asia/china-mine-inner-mongolia.html
Maybe they\'re not aware of the concept of angle of repose, especially as regards open pit mines, and should learn more about it. Seems they have massive landslides ALL THE TIME there. If it\'s not a coal mine, it\'s a road or village.
#geology #science #china #mine #coal #collapse #earth #nature #planet
https://twitter.com/i/status/1708209116622037321
Or they are on the ring of fire.
https://education.nationalgeographic.org/resource/plate-tectonics-ring-fire/
Technically speaking they aren\'t, but they are close enough that traditional Chinese architecture is earthquake tolerant in a way that traditional European architecture isn\'t.
The February landslide occurred in Inner Mongolia.
When the sides of the pit are perilously close to a slide, the vibrations from heavy machinery or any explosives will be enough to set it off. Unless the pit was excavated from some kind of stable bedrock, they need to knock those sides down, cart away the loose debris, and make the pit more of a bowl shape.
If you are carrying on about angle of repose, you want a conical shape. In reality, the angle of repose depends on the material exposed, and the shape is going to depend on the layers of materials being dug through, which I don\'t know anything about, and isn\'t likely to be easily accessible to the public because it is relevant to the value of the mine.
What other shape could you have?
An infinite number, but no element can be steeper than angle of repose of the material at that level of the pit.
A hyperbola ( actually structurally very strong and seen quite often at nuclear power plants)?
A rotated hyperbola wouldn\'t limit the steepness of the sides in the way you want.
I already told you that 3 in 12 would be safe even for loose sand. The upfront costs are dwarfed by the cost of catastrophe. And they need to take all that fill and berm it up a safe distance from the lip to channel surface runoff away from their pit.
And why go that shallow if it isn\'t loose sand?
That place looks like it needs to be limited to 3 in 12. Sounds like a lot of work but look at the mess they have now. They need to cart away loose debris anyway and recover and repair a bunch of infrastructure, and convince people who now have no confidence whatsoever in their judgment to go back to work there.
Sounds like a difficult job. It\'s not easy to get mining companies to move stuff that nobody will pay for, and incipient disasters are about as worrying as anthropogenic global warming - which is to say, not enough.
Just one look at that shit-for-brains Inner Mongolian operations manager told me all I needed to know about the kind of people they have running that show.
So you think you can judge intelligence just by looking at people, even if they come from a different culture. That provides a depressing measure of your intelligence.
https://en.wikipedia.org/wiki/Angle_of_repose
--
Bill Sloman, Sydney
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From: Fred Bloggs <bloggs.fredbloggs.fred@gmail.com
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From: Fred Bloggs <bloggs.fredbloggs.fred@gmail.com
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On Tuesday, October 3, 2023 at 10:01:08â¯AM UTC-4, Anthony William Sloman wrote:
On Tuesday, October 3, 2023 at 11:33:15â¯PM UTC+11, Fred Bloggs wrote:
On Monday, October 2, 2023 at 9:51:08â¯AM UTC-4, Anthony William Sloman wrote:
On Tuesday, October 3, 2023 at 12:30:36â¯AM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 11:24:50â¯PM UTC-4, Anthony William Sloman wrote:
On Monday, October 2, 2023 at 12:12:05â¯PM UTC+11, Fred Bloggs wrote:
On Sunday, October 1, 2023 at 3:51:50â¯PM UTC-4, a a wrote:
Geology Scienceá á á
@GeologyyScience
·
23h
Coal mine collapses in Northern China ð¨ð³
China has a real bad record with coal mines.
https://www.nytimes.com/2023/02/23/world/asia/china-mine-inner-mongolia.html
Maybe they\'re not aware of the concept of angle of repose, especially as regards open pit mines, and should learn more about it. Seems they have massive landslides ALL THE TIME there. If it\'s not a coal mine, it\'s a road or village.
#geology #science #china #mine #coal #collapse #earth #nature #planet
https://twitter.com/i/status/1708209116622037321
Or they are on the ring of fire.
https://education.nationalgeographic.org/resource/plate-tectonics-ring-fire/
Technically speaking they aren\'t, but they are close enough that traditional Chinese architecture is earthquake tolerant in a way that traditional European architecture isn\'t.
The February landslide occurred in Inner Mongolia.
When the sides of the pit are perilously close to a slide, the vibrations from heavy machinery or any explosives will be enough to set it off. Unless the pit was excavated from some kind of stable bedrock, they need to knock those sides down, cart away the loose debris, and make the pit more of a bowl shape.
If you are carrying on about angle of repose, you want a conical shape. In reality, the angle of repose depends on the material exposed, and the shape is going to depend on the layers of materials being dug through, which I don\'t know anything about, and isn\'t likely to be easily accessible to the public because it is relevant to the value of the mine.
What other shape could you have?
An infinite number, but no element can be steeper than angle of repose of the material at that level of the pit.
A hyperbola ( actually structurally very strong and seen quite often at nuclear power plants)?
A rotated hyperbola wouldn\'t limit the steepness of the sides in the way you want.
I already told you that 3 in 12 would be safe even for loose sand. The upfront costs are dwarfed by the cost of catastrophe. And they need to take all that fill and berm it up a safe distance from the lip to channel surface runoff away from their pit.
And why go that shallow if it isn\'t loose sand?
They set off explosive a lot there, and they\'re also running around really heavily loaded big machinery. A shallow mound probably costs less to build too.
That place looks like it needs to be limited to 3 in 12. Sounds like a lot of work but look at the mess they have now. They need to cart away loose debris anyway and recover and repair a bunch of infrastructure, and convince people who now have no confidence whatsoever in their judgment to go back to work there.
Sounds like a difficult job. It\'s not easy to get mining companies to move stuff that nobody will pay for, and incipient disasters are about as worrying as anthropogenic global warming - which is to say, not enough.
Just one look at that shit-for-brains Inner Mongolian operations manager told me all I needed to know about the kind of people they have running that show.
So you think you can judge intelligence just by looking at people, even if they come from a different culture. That provides a depressing measure of your intelligence.
The facts speak for themselves, as do your clueless comments.