Quantitative characterization and three-dimensional reconstruction of bituminous coal fracture development under rock mechanics testing

To examine the development law of a coal fracture structure under uniaxial compression, tension, and shearing, a study involving bituminous coal was conducted. A high-resolution three-dimensional (3D) X-ray microanalyzer (microscale) was used to scan the coal after loading using computed tomography (CT). Finally, a threshold segmentation method was implemented to segment the coal matrix, minerals, and fractures in the CT scanning image of the...