Whaley Bridge Evacaution - Toddbrook Reservoir

[renewablejohn]

But a budget of £200 million doesn't sound a lot for for managing and maintaining 2000 miles of canals, rivers, dames etc. IMO moving British waterways into this trust was a way of the government offloading a problem, a sort of aquatic National Trust.

Thats the problem they have been taking the money to maintain the system but without carrying out the work. You might get away with lack of maintenance for a couple of years but it stacks up over a decade. Last year was disastrous on the Leeds Liverpool with large sections shut all summer due to mismanagement.

 

[Steevo]

from the clip i saw on tv they were doing a pretty damn good job of dropping 2 tons at a time very accurately, also chopper never flinched after dropping 2 ton each time

I don’t doubt they were doing a good, precise job....but centimetre square...?! Perhaps they meant within centimetres.....i.e “closer than a metre”

To drop a dumpy bag from height onto other bags and get it to land with 1cm accuracy is I would suggest impossible.

 

[Steevo]

Thats the problem they have been taking the money to maintain the system but without carrying out the work. You might get away with lack of maintenance for a couple of years but it stacks up over a decade. Last year was disastrous on the Leeds Liverpool with large sections shut all summer due to mismanagement.

Sounds like the Environment Agency to me!

 

[dowcow]

I don't disbelieve you on the metrics but most of those pod based pumps on demount gear on the MAN 6 and 8 wheelers you see around the country belong to HMG and are strategic civil defence placement not the individual fire authorities. Seeing how big the boxes are , I'm surprised the capacity is so low

The fire authorities do invoice for their work in these circumstances

There was shots of some pumping on the news tonight. The very large pipes were discharging fairly sedately, while when we pump slurry we would often be trying to blast it halfway across the slurry tower to stir it up. That said, their pipes looked big enough that it might be 5t/minute per pump.

 

[Steevo]

The news I saw on tv suggested they were 12” pumps.

 

[ARW]

All those dumpy bags will have to be removed somehow!

 

[Muck Spreader]

Fire brigade spokesman said this morning they had now removed 35% of the water and were aiming to remove 75%.

 

[Cowcalf]

would have thought some concrete or fine material to get into gaps between dumpy bags would help bind it together, but their getting progress

 

[JP1]

Fire brigade spokesman said this morning they had now removed 35% of the water and were aiming to remove 75%.

The pictures on Sky this morning look like they confirm that

 

[jondear]

Next will be a rescue attempt for all the fish stranded left behind!

 

[Whitepeak]

Fire brigade spokesman said this morning they had now removed 35% of the water and were aiming to remove 75%.

Last night I heard that it had dropped 1.5m, but they need to drop it by 8m! Which is some volume of water when the reservoir covers 15ha!

 

[brigadoon]

Last night I heard that it had dropped 1.5m, but they need to drop it by 8m! Which is some volume of water when the reservoir covers 15ha!

In round figures it would approach 1M tonnes - I used to play a minor role at a drydock at Nigg and we would take 3 days to pump out 600k tonnes using a fleet of submersible pumps, we would be shifting about 8000 tonne/hr or 140/minute overall average.

The folks pumping water out of the dam will need to be doing about the same but most of it will be going out the sluice I would think.

 

[Muck Spreader]

Last night I heard that it had dropped 1.5m, but they need to drop it by 8m! Which is some volume of water when the reservoir covers 15ha!

Your have got to remember that a reservoir tends to be a V shape, so it take a lot of pumping at the start for not much fall in height but the fall becomes quicker as it goes down.

 

[renewablejohn]

Sounds like the Environment Agency to me!

No lack of water management that could have been resolved with back pumping facilities.

 

[kill]

Next will be a rescue attempt for all the fish stranded left behind!

Could send them down to Devon to replace fish stocks due to some idiot leaving a umbilical system disconnected over night below a slurry lagoon of digestate

 

[Bobthebuilder]

All those dumpy bags will have to be removed somehow!

Someone on tv said it was going to be sprayed with concrete on top of the dumpy bags

 

[Hindsight]

from the clip i saw on tv they were doing a pretty damn good job of dropping 2 tons at a time very accurately, also chopper never flinched after dropping 2 ton each time

If same pilots they had a dummy run at Wainfleet a few weeks ago.

 

[Mr Mackay]

Someone on tv said it was going to be sprayed with concrete on top of the dumpy bags

Seems like a plan !! It all depends how much earth was gouged out by the flow and the thickness of the wall behind I suppose .

 

[RushesToo]

Seems like a plan !! It all depends how much earth was gouged out by the flow and the thickness of the wall behind I suppose .

I thik the dumpy bags are to stabilise the wall until they have drained the reservoir. It will then go pretty serious reconstruction. The dumpy bags will go and engineering with a >200* year life expectancy go in.

* That was probably what was done last time, but required maintenance......

 

[JCMaloney]

Despite the failure of the modern concrete you have to tip your hat to the Victorian engineers who built it without the range of kit available these days.
Very scary when you look at the layout of dam height and the village, bet their insurance premiums will get "reviewed".