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pump failure
- Thread starter chris-law
- Start date
chris-law
Well-Known Member
im sat on the top of one of these tanks reaching down to around 15.5 m and the machine in the bottom is keeping a stockpile for me to load trucks , at around 10m we hit water so they put a 4inch pump in which coped well until it started raining , they then put another 4inch pump in which kept the water at bay for a few days, after a few more days of heavy rain the water level started to rise very slowly .
we came in the next morning and the pics are what we found , it seems the tanks we are working on are linked to a big area that a power station was sat on by 2 10ft pipes per tank , once the big area had filled to the level of the large pipes up went the level in our holes
we came in the next morning and the pics are what we found , it seems the tanks we are working on are linked to a big area that a power station was sat on by 2 10ft pipes per tank , once the big area had filled to the level of the large pipes up went the level in our holes
AmerIndependent
Site Sponsor
- Joined
- Nov 4, 2009
- Messages
- 359
- Location
- Riverside, CA
- Occupation
- Caterpillar Powertrain Rebuild & Repair Specialist
They look like little creatures trying to climb out of a fish tank but not getting any grip on the glass. lol.
chris-law
Well-Known Member
the main contractor is picking up the bill for this **** up , they were warned this may happen but insisted everything would be fine , we sat for 5 weeks after that on full pay while they decided if it was safe to go back in
tootalltimmy
Senior Member
It amazes me what a variety of work situations that excavators get into. Great pictures. I would be a little nervous going down there.
chris-law
Well-Known Member
chris-law
Well-Known Member
AtlasRob
Senior Member
Great to see your working Chris. 5 weeks twiddling your thumbs, bet your good at Suduko and probably sleep walk the crossword now also.
Those deep excavations and water can be quite a concern.
I was with Taylor Woodrow at Brighton when they were sinking the main shaft for the sewer tunnel. Top was close piled to get through the shingle then once into the chalk they used concrete segments.
Excavation was with an Hitachi 13tonner and it was never left in the hole overnight. The risk of pump failure was too great.
A couple of 6" submersibles working vertually all the time to keep it under control.
Final depth was getting on for 40metres from memory.
Rings are 1metre each and your already inside a 10m cofferdam.
Yes I know this isnt a 13t Hitachi, but its the only shot I have of the shaft without having to tip the wardrobe out and scan some more.
