Author Topic: Deep Mine Shaft Required  (Read 3655 times)

Offline Mark

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Deep Mine Shaft Required
« on: August 25, 2019, 06:04:15 am »
Does anyone know of an open shaft at least 250mtrs deep (good condition) 2.5mtrs diameter, good access, ideally near the national grid, where a test rig could be installed, for a power generation contraption involving a heavy weight.

Ladywash would be ideal, apart from it’s used for exhausting Milldam

Offline Graigwen

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Re: Deep Mine Shaft Required
« Reply #1 on: August 25, 2019, 10:31:04 am »
... an open shaft at least 250mtrs deep (good condition)...



Presumably that is 250m deep but not partly filled with water?


.

Offline AR

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Re: Deep Mine Shaft Required
« Reply #2 on: August 25, 2019, 01:01:55 pm »
New Engine _might_be a possibility but I don't know how susbtantial/removeable the cap is, plus there's the unconfirmed tale that the engine beam is wedged halfway down! I don't think there's anything else in the Peak deep enough or unflooded, likewise I don't think there's much left in the way of unfilled coal mine shafts that would fit the bill.
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Offline Big Jim

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Re: Deep Mine Shaft Required
« Reply #3 on: August 25, 2019, 02:09:34 pm »
Which New Engine Adam?  I think New Engine at Gregory (Ashover) is very deep but don't know much about it but presume that's bloody deep too being up on the gritstone and its in a the farm yard isn't it?

Offline AR

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Re: Deep Mine Shaft Required
« Reply #4 on: August 25, 2019, 05:05:30 pm »
I was thinking of the Eyam Edge one, but yes, the topmost shaft at Gregory might also be deep and wide enough. No idea about its current condition though...
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Offline ChrisJC

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Re: Deep Mine Shaft Required
« Reply #5 on: August 25, 2019, 07:02:35 pm »
I wonder if any of the Minera shafts are deep enough, or one of the Milwr Tunnel ones (over 600ft if I recall correctly, so might be a bit short).

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Offline markpot

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Re: Deep Mine Shaft Required
« Reply #6 on: August 25, 2019, 07:27:55 pm »
New engine ashover was my first thought

Offline bograt

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Re: Deep Mine Shaft Required
« Reply #7 on: August 25, 2019, 07:57:47 pm »
How about an abandoned railway tunnel vent shaft? the tunnel from Woodhead towards Peniston comes to mind.
 
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Offline NewStuff

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Re: Deep Mine Shaft Required
« Reply #8 on: August 25, 2019, 08:00:35 pm »
I wonder if any of the Minera shafts are deep enough, or one of the Milwr Tunnel ones (over 600ft if I recall correctly, so might be a bit short).

Chris.

Taylors shaft comes to mind - 800ft or so by all accounts. There are deeper shafts up there (Meadow/City), but Taylors is not by any "toursity" bits.
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Offline nickwilliams

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Re: Deep Mine Shaft Required
« Reply #9 on: August 26, 2019, 12:22:50 am »
Might be worth posting this on AditNow, Mark.
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Offline cavemanmike

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Re: Deep Mine Shaft Required
« Reply #10 on: August 26, 2019, 11:09:33 am »
Pen y bryn is 800 ft

Offline Big Jim

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Re: Deep Mine Shaft Required
« Reply #11 on: August 26, 2019, 08:22:15 pm »
How deep is Cromford Moor mine ie the capped shaft at Black Rocks car park. That's got lecky close by at the old visitor centre/bogs.

Offline AR

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Re: Deep Mine Shaft Required
« Reply #12 on: August 26, 2019, 09:04:43 pm »
Cromford Moor is somewhere round 400-450ft IIRC.
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Offline ChrisJC

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Re: Deep Mine Shaft Required
« Reply #13 on: August 26, 2019, 09:18:48 pm »
Pen y bryn is 800 ft

That's the one I was thinking of. I believe that United Utilities were using it until recently.

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Offline Fishes

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Re: Deep Mine Shaft Required
« Reply #14 on: August 27, 2019, 01:59:10 pm »
Cromford Moor is somewhere round 400-450ft IIRC.

From memory it was around 360 feet to the current bottom. Its driven in the vein so the width is limited and it twists around with the hade and is not perfectly vertical.

Lynne Willis did a shaft survey and a sketch survey of the workings was also carried out (previously displayed in the visitor centre) when we were working down there in around 89/90.

Offline Big Jim

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Re: Deep Mine Shaft Required
« Reply #15 on: August 27, 2019, 04:40:32 pm »
Golconda? So long since I went down there on the WMRG winch so cant remember how deep and near lecky supply....
 Mark doesn't want much does he!

Offline cavemanmike

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Re: Deep Mine Shaft Required
« Reply #16 on: August 27, 2019, 04:41:30 pm »
Quote from: cavemanmike link=topic=25411.msg312500#msg312500 date=1566814173

Pen y bryn is 800 ft
[/quote

That's the one I was thinking of. I believe that United Utilities were using it until recently.

Chris.

Hi Chris
U/u have never used pen y bryn.
They have used herward shaft and lately caeau shaft

Offline Fishes

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Re: Deep Mine Shaft Required
« Reply #17 on: August 27, 2019, 05:10:09 pm »
Golconda? So long since I went down there on the WMRG winch so cant remember how deep and near lecky supply....
 Mark doesn't want much does he!

Unfortunately not wide or deep enough for Mark.

Offline ali_mac

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Re: Deep Mine Shaft Required
« Reply #18 on: August 28, 2019, 05:26:31 pm »
Nosey question - what is this actually for?
You've piqued my curiosity!

A

Offline AR

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Re: Deep Mine Shaft Required
« Reply #19 on: August 28, 2019, 09:19:58 pm »
It'll be for a trial of a power storage system - you have a deep shaft and a weight on a cable, with a generator geared to the drum so when the weight descends, you get electricity. The idea is that you drop the weight when there's a shortage on the grid, then wind it back up when you've got surplus (cheaper) electricity kicking around.
Dirty old mines need love too....

Offline SamT

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Re: Deep Mine Shaft Required
« Reply #20 on: August 28, 2019, 10:12:40 pm »

Offline owd git

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Re: Deep Mine Shaft Required
« Reply #21 on: August 29, 2019, 07:17:31 am »
could depth be offset by gearing / pulley system?  :shrug:
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Offline SamT

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Re: Deep Mine Shaft Required
« Reply #22 on: August 29, 2019, 08:24:44 am »
No not really - the total amount of potential energy is dictated by 2 things, the mass of the weight, the length of the drop.

Then you have to take away all the losses due to friction, efficiency of generators etc.   Adding more gearing/pulleys just increases the proportion of losses due to friction, and doesn't increase the amount of energy you can harvest.

The principle is the same as that used by Dinorwig pumped hydro scheme (and other such pumped storage schemes).

Dinorwig was traditionally used for 'peak lopping' i.e. it kicked in at 7pm or when ever it was that coronation street finished and everyone stuck the kettle on.  It used to be the exact point of peak demand on the grid to the extent that they used to have a telly in the control room so they could see the exact point at which the credits rolled on the program so they could push the button.

I suspect the peak demand profile on the grid is changing as peoples viewing habits have changed radically over the last decade with 'on demand' viewing.   Perhaps far less predictable, but then perhaps far less 'peaks and troughs'

Offline Boy Engineer

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Re: Deep Mine Shaft Required
« Reply #23 on: August 29, 2019, 09:06:11 am »
Quote
It used to be the exact point of peak demand on the grid to the extent that they used to have a telly in the control room so they could see the exact point at which the credits rolled on the program so they could push the button.

Judging by some of the barrel-scraping stuff on the box recently, I imagine it’s more a question of reducing supply as folk reach for the off button. I’m not sure if it is an ageing thing, but there do seem to be a lot of morons unable to put up shelves/do their own garden/avoid cheating on a partner/cook the most basic dish etc. Ironic that at a time when they have more information in the palm of their hand than ever before, the big screen seems to celebrate incompetence and ignorance.
Anyway, must go now as nurse says it’s tablet time.

Offline JasonC

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Re: Deep Mine Shaft Required
« Reply #24 on: August 29, 2019, 02:50:37 pm »
..... it kicked in at 7pm or when ever it was that coronation street finished and everyone stuck the kettle on. ....

It'll be when Love Island goes off now  ;D