Investigation of possible causes of sinkhole incident at the Zonguldak Coal Basin, Turkey
M Genis, H Akcin, Oemer Aydan, G. Bacak
article (Uluslararası, Hakemli) | Yazar(lar): M Genis, H Akcin, Oemer Aydan, G. Bacak | Yıl: 2018 | Dergi/Kurum: GEOMECHANICS AND ENGINEERING | İndeks: WOS.SCI | DOI: 10.12989/gae.2018.16.2.177 | Anahtar Kelimeler: sinkhole, subsidence, karstic cave, underground coal mining — Özet: The subsidence mechanism of ground su
The subsidence mechanism of ground surface is a complex phenomenon when multiple seam coal mining operations are carried out. Particularly, the coal mining beneath karstic formations causes a very special form of subsidence. The subsidence causes elasto-plastic deformation of the karstic layers and the collapse of cavities leads to dolinization and/or sinkhole formation. In this study, a sinkhole with a depth of 90 m and a width of 25 m formed in Gelik district within the coalbasin of Zonguldak (NW, Turkey) induced by multiple seam coal mining operations in the past has been presented as a casehistory together with two-dimensional numerical simulations and InSAR monitoring. The computational results proved that the sinkhole was formed as a result of severe yielding in the close vicinity of the faults in contact with karstic formation due to multiple seam longwall mining at different levels.