RJRSW

I do not know if this has been posted anywhere but a new video of Workers Filling Sinkhole at Corvette Museum using remote-controlled Bobcats was posted today on YouTube:

Gearhead Jim

Nice, thanks.

RocketDawg

Why remote controlled bobcats?

ncvette_1FUNRIDE

I'm sure it is for safety reasons.

Joe B.

I was hoping to get a first hand look at it. Oh well, it provided some great publicity and a tourism boost. Too bad about the cars.

Cybernetic Medic

Thanks for posting the video. I check their webcam from time to time but it seems to always be offline lately. I would like to have seen them grouting the cave openings to get some idea of how much grout they pumped into them. The remote Bobcats look like they would be fun to operate.

Dano523

Kind of lost here,
Granted that they are filling it back in, but what is going to keep the erosion from happening again by circulating ground water?

This kind of reminds me of Monty Python castle story, where they keep building castles over the old ones, until finally one does not sink.

vforrest

...thinking exactly the same thing!

torquetube

They laid huge Z-profile sheet piling sections on the bottom of the hole to act as a support deck, and sealed up the edges with gunite. Then they cut big through-holes in the deck for deep pilings to be drilled after the back-fill is complete. The pilings will reinforce the central spire and the new skydome floor they're going to put in.

They also installed a long vertical steel tube with a ladder in it so they climb down through the back-fill and under the steel deck into the cave below for inspections.

It seems like the plating material is likely to settle under the tremendous weight of the backfill. I would have thought that they'd pour a reinforced slab down there that ties-in to the pilings, but apparently that's not in the program.

Dano523

Tying the slab deck into the caissons/steel is not the end of the world, and pretty much done for every high rise building out there.

But what dumbfounds me, is the same erosion that undermined the slab sub-straight grade to cause it to fail, will also undermine the steel caissons as well in time.

I guess with enough through support to tie it all together, the building will be self supported on it own without the need of soil sub grading, but may just end up with the whole building leaning in time instead.

zero11

You know what it always comes down to guy's?money.It always dictates how things are done.When your messing with nature you never know what's to come.

MannyS

There will a TSB in 2 years with a permanent fix

Dano523

Epic!!!!!!!
And pretty much the GM way of solving problems.

Skid Row Joe

I won't be going in that room again - too creepy and there may still be a chance of another cave in. Using remote-controlled Bobcats tells you something about the potential.

1bdvet

Thanks for sharing!

R&L's C6

I'm sure the odds of being killed in an auto accident on the way to the museum far out number the odds of that floor caving in again. Better bubble wrap yourself and stay home.

NoRuls

I'm guessing when it's all done and signed off by the geologists there will be ultra-sound tests taken on a regular basis not only at the museum but around the entire area. As to cost, I'm sure there was a HUGE insurance claim and don't forget all the donations.

Stickshiftsteve

I was hoping they'd go with a glass floor over the open hole.

Jim2003

The geology professor (quote expert in sink holes) from Western Ky University (there in Bowling Green) stated that in America they have never had another sink hole happen next to the first one. This whole area of KY has many underground caves in it. Yes he could be wrong, yes he could be right. I think they are doing the most logical thing to insure the safety of future cars and people.

Skid Row Joe

Perhaps you missed the remote controlled tractors?

I think you'll need your bubble wrap, so you don't hurt yourself.