Malik Hooker Womens Jersey  The Principle of Longwall Top Coal Caving (LTCC)





The Principle of Longwall Top Coal Caving (LTCC)



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Coal is the official state mineral of Kentucky.


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About: The Principle of Longwall Top Coal Caving (LTCC)


Coal mining and burning must end. Our planet is dying, and so are people and animals due to pollution.
a true animation. thank you
All you need is a bitch of a prime minister ( Thatcher ) to kill off your country's mining industry. RIP British coal, rot in hell Thatcher.
Maintenance on that rear AFC must of been a pain, worked in UK coal mines and often had chains snap or inspection covers rip up
Seams thicker than 6M its a Derbyshire miners wet dream. Our tallest seam was only about 1.5m are narrowest about 80cm. That was a 200m crawl on your belly with barely enough room to turn round to come back the other way.
lovely in principle but I wouldnt want to be behind the chocks. I dont see how it can be a safe and practical investment for any mining company. Geology varies so much from one part of a mine to another that you cant predict the gob to fall as predictably as the animation, it just doesnt work like that. If an advancing face comes to some bad strata the entire rear armoured face conveyor (AFC) could be buried in so much stone that it would have to be cut loose and left behind to let the powered supports keep up with the face cuts, I just cant see how you could safely let men go behind the chocks to clean off by hand if the strata was so badly fractured that it just kept falling as quick as you could remove it. Ive worked on faces where the rock above the coal seam just keeps falling and filling up the chock race (the safe part where men traverse up and down the coal face) and has left cavities above the chocks up to 30 or 40 feet high. Imagine having that scenario behind the chocks when someone is working on the rear AFC and a lump of rock comes down the size of a small car, I dont thing those fly out rear canopies would save him. In reality the gob does'nt always fall as soon as the chocks move forward some times it can stay up for several cuts before it drops, ther thought of being behind those chocks scares the shit out of me tbh. Even a simple AFC repair would be a nightmare.
Google translate - Trzeba być ograniczonym umysłowo konstruktorem by coś takiego wymyślać jak przenośnik za sekcjami zmechanizowanymi - mam za sobą 30 lat pracy na kopalni i przerabialiśmy już tamy czołowe na podsadzka mokra by utrzymywać strop , mieliśmy sekcje z stropnicą od zawału , tamy i stropnica nam gięło jak karton , każde uszkodzenie siłowników ,zatrzymywało ścianę bo sekcje zagniatało , nie szło wyciągnąć od zawałów , to strzelaliśmy materiałem wybuchowym by uwolnić sekcje ale i tak trwało to 2 szychty . Nie stać nas na to.Wyobraźcie sobie że łańcuch się w przenośniku zerwie z zerwie się na pewno (a jak zerwie się spodem? ) , jak chodzi pusto to nic mu się nie stanie ale jak przyjdzie kamień to nikt tam nie wejdzie by to naprawić.
Pękają przyłącza przenośnika z przodu , bolce a nawet belki do przesuwu sekcji a tam ma wytrzymać taki łańcuszek jak zawał naciśnie ? To wymyślił ktoś co na dole nie był
i nie pracował w ścianie
How do you ever remove it if it's always holding up collapsing ceilings?
It's powered support ..used in longwall coal mining
Seit 2015 gibt es dieses video es kommt zu spät das kann man ja nur noch in Ausland anbieten aber nicht mehr hier in Deutschland
wonder how much one of these machines costs
Thanks
ну и как обслуживать конвейер ?
Xsss
good
Does this machine get teleported into the ground magically underneath all the rock/coal? I wonder how it gets there inside everything.
I can't understand where is the operator when the machine is running
Ни хуя не понял, но было интересно
This is bit confusing
yea you deserve my dislike 👎


Coal stock


Coal is extracted from the ground by coal mining, either underground by shaft mining, or at ground level by open pit mining extraction.

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Coal is primarily used as a solid fuel to produce electricity and heat through combustion. World coal consumption was about 7.25 billion tonnes in 2010 The price of coal increased from around $30.00 per short ton in 2000 to around $150.00 per short ton as of September 2008. In early 2015, it was trading near $56/ton.