We see news reports of sinkholes opening in various places all over the world. What I never hear about is what’s done afterward. I assume smaller ones, like this one in [Taiwan](https://supercarblondie.com/sinkhole-swallows-tesla-model-y-taiwan/) could be repaired without too much hassle. What about the larger sinkholes in [Turkey](https://www.dailymail.co.uk/news/article-11262701/16-giant-sinkholes-open-one-Turkish-region-months.html)?
Is there a way to make land like that usable again? Or do people just sort of put up a sign and hope no one falls in?
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The main issue with sinkholes isn’t filling them, but figuring out why they happened and fixing that underlying issue.
It can be from the simple and obvious pre existing cavity, that someone didn’t survey pre comstruction, caving in.
All the way to a complex shifting of ground table water currents that changed the substrate geology. This can be very compex to fix. Costly to survey thefull extent of newly made/future sinkhole danger zone and find solutions to protect the existing housing and infrastructure from the new situation.
A classic solutuon is driving pylons [sry don’t know the exact technical term in English] into the ground. Or sideways anchors under a particularly fragile and important building at risk.
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