Video: Giant sinkhole’s volume tripled since October — Now over 15 acres — Total settlement area almost 40 acres

Published: May 2nd, 2013 at 9:13 pm ET
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Title: Public Briefing 5/1/13 – Part 6
Source: Assumption Parish
Date: May 1, 2013

At 7:00 in

Gary Hecox, CB&I hydrogeologist: Right now the volume of water in the sinkhole is about 3 times bigger than it was last October. […]

The current area of the sinkhole is 15.1 acres. That is an increase of 2.7 acres from March.

The total settlement area according to Miller Engineering report is now 37.5 acres. That was also an increase.

The volume of the sinkhole increased about 300,000 or 400,000 cubic yards in March.

Watch the full 14-part briefing here

Published: May 2nd, 2013 at 9:13 pm ET
By

one comment

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1 comment to Video: Giant sinkhole’s volume tripled since October — Now over 15 acres — Total settlement area almost 40 acres

  • 16Penny 16Penny

    "The current area of the sinkhole is 15.1 acres."

    This area only includes -10 ft elevation and below (aprox 8 mins). The total area of sinkhole "settlement" is 37.5 acres. The balance is 22.4 acres. That is one big funnel. I would expect most of the gas in the aquifer to follow the incline of the claytard and form pockets wherever possible uphill from there.

    The ground has to sink 10 ft to be considered part of the sinkhole. Accounting for the "settlement" area (using an average depth of 3 feet) would make up 110,000 cubic yards of the missing balance. The volume left to fill makes up another 140,000 cubic yards. That would leave It would not be hard for them to make more accurate calculations than me using their actual measurements. Using approximations, there is only 2,260,000 cubic yards missing. I'll see if I have time to do a bulking problem on the cavern and collapse zone tomorrow. That would show an approximate bulking ratio if it was back calculated. At least you could see if it made sense, idiot check.