fix sink hole

How to Fix a Giant Sinkhole (in Guatemala or Elsewhere)

Loyal Surge Desk readers know that the giant sinkhole that appeared in Guatemala City on Monday is not as rare as it might appear. But that leaves a related question: Just how does one go about fixing a sinkhole, especially when it is the size of a multi-story building? Excavate and Filter According to Leigh University in Pennsylvania, a sinkhole "is best repaired by excavating to rock" and then filling the hole with several different layers of stones of varying sizes to form an "aggregate filter." The site includes a diagram, vaguely reminiscent of seven layer dip, showing how this can be ...

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