词条 | Chalk mining |
释义 |
A link was recently discovered between sinkholes opening up in the UK and the location of former chalk mines. Due to the softness of chalk, rain and erosion has caused the ground in some places to collapse into the remnants of ancient chalk mines and tunnels.[3] References1. ^{{cite web|url=http://www.ukgeohazards.info/pages/eng_geol/subsidence_geohazard/eng_geol_subsidence_chalk.htm|title=Subsidence & Collapse Geohazards: Chalk & Flint Mining|accessdate=27 January 2017}} {{Portal bar|Mining|Earth sciences}}2. ^1 {{cite web|title=Chalk Mines {{!}} KURG|url=https://www.kurg.org.uk/chalk-mines/|website=www.kurg.org.uk|accessdate=27 January 2017}} 3. ^{{cite web|title=The sinkhole truth: who's to blame - man or rain?|url=https://www.telegraph.co.uk/news/science/10644073/The-sinkhole-truth-whos-to-blame-man-or-rain.html|website=Telegraph.co.uk|accessdate=28 January 2017|language=en}} External links
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