The Principles of Room & Pillar Mining

[@johnbird7599]

Been underground Coal mining for over 18 years now, good job

[@pistolalley5442]

What’s the highest and longest tunnel this machine has built?

[@mottthehoople693]

the length of a panel is relevant on the size of the lease and the costs involved in supporting and ventilating the mine. Your question is akin to how long is a piece of string....

[@madaxe79]

They don’t build tunnels, although they could. A continuous miner mines coal, either in board and pillar mining, or in development for longwall mining. Some mines have hundreds of kilometres of underground roadways, as well as the mining panels themselves. In development a single miner can easily develop 50-60 metres per shift, but the challenge is maintaining a sequence of mining, coal clearance, and strata support (bolting). It’s easy enough to mine it, but you’re limited to roof support. I hope that helps.

[@creater5924]

इस वक्त जो भी मेरा comment पढ़ रहा हैं हम दोनों एक दूसरे के लिए अंजान हैं फिर भी में भगवान से प्रार्थना करूंगा कि आपको और आपके परिवार को खुश रखें।

[@clintonwurzbach5166]

Where is the water coming from ? On board tanks or direct lines?

[@stevesimpson2819]

They have water pumps installed at the mine that feed the machines, usually with an 1-1/2" hose. Mines tend to have plenty of water in them. The bigger challenge is keeping the mine dry.

[@imanenigma3348]

Fireline. Water pipes that are advanced with mine progress. Manifolds are in place along the line so you can tap into it when a supply of water is needed. You also have a pump out line for waste or excess face water to be returned to the surface dams. The cycle begins again. Steve is right. We need water to cut and supress dust but excess water from the mining process and water coming out of the face can be a real pain to get back to the surface. Can make an unpleasant workplace, a very unpleasant workplace! :-)

[@josephhurdman5588]

Wouldn't driving bolts into the roof make it less stable? You're opening cracks into the roof, after all...

[@astral3329]

They are glued in place, helps to keep the whole structure stable but yes the roof top can fall during the bolting

[@imushavem7504]

The bolt hole are drilled first and plates to help distribute the weight. Most bolts use some form of resin that is heat activated. Drilling them in generates enough heat to active it. One danger is with bad top (like sediment layered) which has thin layers that can break between bolts. Some of those can be as sharp as knifes with weight behind it as it falls.

[@KarimWatanwal]

Really an informative video. Thank you.

[@MrMustangMan]

i just watched a CAT advertisement and didn't even know it.!!!!!!!!

[@markzinzilieta8927]

Very informative video !!!

[@dbt349]

Nice equipment jus wonder if it will compare to joy

[@stevesimpson2819]

We got an answer to this question in 2016 when Cat stopped making them.

[@johnnyk6628]

All our equipment was from Joy .

[@kumarighasnin1569]

Nice video sir.

[@eastcoastrifraf]

Always wondered why they make the ceiling so low. Just make it 8' and people can walk in it then.

[@t.r.4496]

The cost to cut the rock is too much for profit. The height of the mine is determined by the height of the coal seam. All coal that leaves a deep mine must be run thru a wash plant to separate the rock from the coal. The less rock that's cut the cheaper it is to run the plant. It's all about cost. Some top is white sandstone and they would be replacing miner bits continuously for more profit loss. Low coal mines are somewhere between 42 inches high. And some rock does have to be taken to work it. The only limit to the minimum height is the height of the continuous miner.

[@simonhabtu8849]

REALLY NICE CATER PILLAR

[@ICONBADGTA]

It's going to take a helluva machine and technology to compete with Joy, The industry standard!

[@jakehensley4952]

I agree, cat miners good but I'd rather run a Joy 14/15 any day

[@ICONBADGTA]

@@jakehensley4952 We had a 14-9 with a 14/15 head on it at W-1 didn't we Jake?

[@jakehensley4952]

@@ICONBADGTA I don't know anything W-1 lol but I have seen and play with a lot of miners, I mean in 5 years underground I've been in a lot of different dog hole coal mines lol

[@ICONBADGTA]

@@jakehensley4952 You a different "JAKE HENSLEY" than i worked with.

[@jakehensley4952]

@@ICONBADGTA lol it's cool dude. You know anywhere that's hiring? I'm in southeast Kentucky and its went down bad since the first of the year

[@umeshnamdeo9340]

sir ,helpful for mining student and miners also....

[@kundayimrewa4547]

and this is only a commercial for caterpillar

[@goldenmean-Fire-Fighting]

👍👍👍👍

[@Reactnativenav]

Holy shit is minning cool.