Although most subsidence occurs in the months and years after mining by the longwall method, surface movement is still occurring many decades after the mining.
The uniaxial compression experiments on the sandstone samples containing double fissures and a single circular hole were carried out by using electro-hydraulic
In this study,the moment tensor of transversely isotropic shale was analyzed using a discrete element method-acoustic emission model(DEM-AE model).Firstly,the f