Holme Lock Update

[Alan de Enfield]

During the emergency repairs to Holme Lock on the River Trent, we've discovered a hole in the lock floor and have been forced to cancel our public open day this Sunday.

 

http://canalrivertrust.org.uk/news-and-views/news/holme-lock-undergoes-crucial-maintenance

 

Edit to add video

 

https://www.youtube.com/watch?v=RsC_IVf22Zo&feature=player_embedded

Edited March 14, 2014 by Alan de Enfield

[Lockie Junior]

Yes, from speaking to the foreman yesterday (I was duty site manager) there's a dirty great big hole in the lock apron, just downstream of the stanks. The diver said he put his arm right into the hole, but couldn't feel the far end. Current plans are to pump it out as much as they can (they can get the level down to a few feet), then try filling the hole with underwater grout. If this doesn't work then they'll have to dam off and drain the entire lock cut, adding considerably to the duration and expense of the stoppage.

 

Regards,

Lockie.

[jelunga]

Yes, from speaking to the foreman yesterday (I was duty site manager) there's a dirty great big hole in the lock apron, just downstream of the stanks. The diver said he put his arm right into the hole, but couldn't feel the far end. Current plans are to pump it out as much as they can (they can get the level down to a few feet), then try filling the hole with underwater grout. If this doesn't work then they'll have to dam off and drain the entire lock cut, adding considerably to the duration and expense of the stoppage.

 

Regards,

Lockie.

That is what it is called then. And I thought it was tea boy

[Puddlejumper]

Now! Now! the Lad does Good

During the emergency repairs to Holme Lock on the River Trent, we've discovered a hole in the lock floor and have been forced to cancel our public open day this Sunday.

 

http://canalrivertrust.org.uk/news-and-views/news/holme-lock-undergoes-crucial-maintenance

 

Edit to add video

 

https://www.youtube.com/watch?v=RsC_IVf22Zo&feature=player_embedded

Would Imagine Yes

Edited March 15, 2014 by Puddlejumper

[Lockie Junior]

And I thought it was tea boy

 

Jelunga you cheeky sod!

 

Thanks for the defence Puddlejumper, see you on Monday.

 

Regards,

Lockie.

[Naughty Cal]

 

Update on 20/03/2014:

Whilst carrying out the planned repairs to the gate at Holme Lock, the floor of the lock downstream of the bottom gates suffered a failure resulting in a large ingress of water. Although the precise nature of the failure is under investigation we believe that weathering over many years of the mercia mudstone underlying the concrete floor has created sizable voids. These voids have allowed the passage of water to the underside of the lock floor. The removal of the water from the lock to carry out the works to the gate created a pressure head resulting in a force on the lock floor that has caused the damage.

Investigations are underway to define the extent of the problem and we anticipate that the design and implementation of a solution will soon be underway. As the extent of the voids is unknown, it is difficult to be precise at this stage, but we expect the solution will involve the grouting of the voids. Repairs to the gate are still proceeding, and so once the floor is repaired we can return to the planned works to replace the gate support and cill and re-install the gate.

We appreciate this delay will cause a great deal of disruption and we will do everything we can to get the lock back into full working order as soon as we possibly can, but our estimate at this stage is that the works could take up to the 16^th May.

 

[jelunga]

Update on 20/03/2014:

Whilst carrying out the planned repairs to the gate at Holme Lock, the floor of the lock downstream of the bottom gates suffered a failure resulting in a large ingress of water. Although the precise nature of the failure is under investigation we believe that weathering over many years of the mercia mudstone underlying the concrete floor has created sizable voids. These voids have allowed the passage of water to the underside of the lock floor. The removal of the water from the lock to carry out the works to the gate created a pressure head resulting in a force on the lock floor that has caused the damage.

Investigations are underway to define the extent of the problem and we anticipate that the design and implementation of a solution will soon be underway. As the extent of the voids is unknown, it is difficult to be precise at this stage, but we expect the solution will involve the grouting of the voids. Repairs to the gate are still proceeding, and so once the floor is repaired we can return to the planned works to replace the gate support and cill and re-install the gate.

We appreciate this delay will cause a great deal of disruption and we will do everything we can to get the lock back into full working order as soon as we possibly can, but our estimate at this stage is that the works could take up to the 16^th May.

Looks like April will be a quiet month for the locks. Not excuse then not to get all the painting done at Nether.

[Lockie Junior]

We (C&RT) are getting contractors in on Monday to sort out the hole in the floor. Once thats done our lads can get back on with fixing the dodgy gate.

 

May have more info tomorrow,

Lockie.

[Alan de Enfield]

Thats bu**ered up the trip to Loughborough Boat Festival then (May Bank Holiday)

 

Looks like April will be a quiet month for the locks. Not excuse then not to get all the painting done at Nether.

 

Everybody coming out of Kings will now have to turn left - you'll be extra busy.

[Naughty Cal]

Well. They don't have too. They could go to Stoke which is nice or Gunthorpe.

[jelunga]

Thats bu**ered up the trip to Loughborough Boat Festival then (May Bank Holiday)

 

 

Everybody coming out of Kings will now have to turn left - you'll be extra busy.

Oh. Hadnt thought if that. Rats.

We (C&RT) are getting contractors in on Monday to sort out the hole in the floor. Once thats done our lads can get back on with fixing the dodgy gate.

 

May have more info tomorrow,

Lockie.

Gareth

See stoppage notice above.

[Lockie Junior]

Keith, I know. I was just trying to pass on info that may be of interest or use to those reading this thread. Also nowhere in the stoppage notice did it mention the contractors being the ones fixing the hole.

 

Lockie.

[jelunga]

Keith, I know. I was just trying to pass on info that may be of interest or use to those reading this thread. Also nowhere in the stoppage notice did it mention the contractors being the ones fixing the hole.

 

Lockie.

Should it have done?

[Lockie Junior]

That's their call not mine. I was just passing on info that I've received from C&RT collegues.