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Investigation of possible causes of sinkhole incident at the zonguldak coal basin, Turkey

Geniş M. | Akçın H. | Aydan Ö. | Bacak G.

Article | 2018 | Geomechanics and Engineering16 ( 2 ) , pp.177 - 185

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 coal-basin of Zonguldak (NW, Turkey) induced by multiple seam coal mining operations in the past has been presented as a case-history 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. © 2018 Techno-Press, Ltd Daha fazlası Daha az

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