A sink hole has appeared in the main road running through Biggin Hill, Kent.
The ground collapse, which appeared close to Biggin Hill Airport, opened up earlier yesterday (Thursday 6 September).
A water leak was reported earlier this week to Thames Water at the same location.
A Thames Water spokesperson said: “A leak was reported along the road as low priority earlier this week and the repair is in the process of being arranged, however in light of the hole appearing we’ll send an engineer there immediately to see if it is related to our leak. If it is we’ll upgrade the repair to a high priority job.”
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Peter Brett Associates associate Clive Edmonds believes that it was likely to be a water leak that had triggered the sink hole. He said: “Based on the location it appears that the hole coincides with the feathering edge of Clay-with-Flints deposits over Chalk.
“The collapse might possibly be a true sinkhole triggered by the loss of water into the ground, but it is less likely to be chalk mine related given its proximity to the chalk outcrop nearby.
“Or else it is simply a washout of ground caused by the leaking water pipe – but where did the material that was present at the hole position go?” asks Edmonds. “It would normally need to have been washed into a sewer or something to create the loss of material.
“Therefore, on balance it is quite possibly a sink hole triggered by a water leak.”