Articles | Volume 372
Proc. IAHS, 372, 281–284, 2015
https://doi.org/10.5194/piahs-372-281-2015
Proc. IAHS, 372, 281–284, 2015
https://doi.org/10.5194/piahs-372-281-2015

  12 Nov 2015

12 Nov 2015

The effect of the depth and groundwater on the formation of sinkholes or ground subsidence associated with abandoned room and pillar lignite mines under static and dynamic conditions

Ö. Aydan1 and T. Ito2 Ö. Aydan and T. Ito
  • 1Department of Civil Engineering and Architecture, University of the Ryukyus, Nishihara, Japan
  • 2Toyota National College of Technology, Toyota, Aichi, Japan

Abstract. It is well known that some sinkholes or subsidence take place from time to time in the areas where abandoned room and pillar type mines exist. The author has been involved with the stability of abandoned mines beneath urbanized residential areas in Tokai region and there is a great concern about the stability of these abandoned mines during large earthquakes as well as in the long term. The 2003 Miyagi Hokubu and 2011 Great East Japan earthquakes caused great damage to abandoned mines and resulted in many collapses. The author presents the effect of the depth and groundwater on the formation of sinkholes or ground subsidence associated with abandoned room and pillar lignite mines under static and dynamic conditions and discusses the implications on the areas above abandoned lignite mines in this paper.