Theoretical determination method and field verification of the fracture ...
The coal body is a very complex material and the following assumptions are made in order to facilitate the application of small deformation elastoplastic theory for analytical studies from an ideal perspective, (Ma and Hou 1995; Wu et al. 2000). (1) The coal body is a continuous and homogeneous isotropic elastomer; (2) The yield zone of the coal body is the critical elastic state, and the coal ...