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Showing 1 to 1 of 1 for “"collapse feature"”.
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Geotechnische Modellvorstellungen zur Abschätzung von Gefährdungsbereichen des Altbergbaus und Schachtschutzbereichen im Aachener Steinkohlenrevier
… depths of about 40 m below surface. Nowadays, collapse features still occur in irregular intervals above such shallow mining hollows and shafts, being hazardous to infrastructure and human life. The hard rock consisting of Carboniferous mudstones and sandstones of low to medium strength is …