Simulation of the Compaction Behavior and the Water Permeability Evolution of Broken Rock Masses of Different Shapes in a Goaf

• Published in: Water (Basel) Vol. 15; no. 6; p. 1190
• Main Authors: Guo, Yuxi, Qin, Yan, Chen, Ping, Xu, Nengxiong
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.03.2023
• Subjects: Analysis; caving rock masses; Coal mining; Compaction; compaction characteristics; Dilatancy; Discrete element method; energy evolution; fracture rate; Laboratories; Mathematical models; Modulus of deformation; Numerical analysis; Particle size; Permeability; Porosity; Porous media; Rock masses; Rocks; shape characteristics; Simulation; Simulation methods; Strain energy; Void ratio; water permeability

The rock mass in the caving zone of a goaf is relatively broken and considered a porous medium. Additionally, it has the characteristics of irregular size and shape and sharp edges, and it is easy to break. In the process of caving zone compaction, the shape characteristic of a broken rock mass is o...