Numerical simulation of flooding induced uplift for abandoned coal mines: simulation schemes and parameter sensitivity

International Journal of Coal Science & Technology

Jian Zhao¹  Roy Morgenstern¹  Heinz Konietzky¹  Martin Herbst¹ 

[1] Geotechnical Institute, TU Bergakademie Freiberg, Gustav-Zeuner-Straβe 1, 09599, Freiberg, Germany;

关键词: Surface uplift;    Abandoned mine flooding;    Numerical simulation;    Analytical solution;    Parameter sensitivity;   

DOI  :  10.1007/s40789-021-00465-x

来源: Springer

【 摘 要 】

Numerical simulation approaches have been widely applied to study mining induced subsidence, and they are potential methods to study the flooding induced uplift for abandoned mines. This paper gives an overview about different numerical approaches to simulate uplift induced by flooding abandoned underground mines, including three different hydraulic conditions, considering both unconfined and confined water conditions. Four basic simulation schemes using 1-dimensional rock column models verified by analytical solutions demonstrate these procedures. The results reveal that flooding induced uplift is mainly related to the pore pressure in the mine goaf. The parameter study documents that height and stiffness of the mine goaf have the strongest influence on maximum surface uplift.

【 授权许可】

CC BY