Experimental investigation on the fatigue mechanical properties of intermittent jointed rock under random cyclic uniaxial compression

Feasibility Study of Material Deformation and Similarity of Spatial Characteristics of Standard Coal Rocks

“…With the maturity of similarity theory and methods in underground engineering, scholars have adopted acoustic emission technology and digital scattering methods for similar materials and similarity simulations. Among them, in terms of materials similar to coal rock, the digital scattering technique has been utilized to study the uniaxial compression deformation of similar materials [1,2], rockburst propensity [3], coplanar bifurcation tensile [4], multimineral main perturbation loading [5], and Brazilian discs with filled and unfilled fissures [6]; the acoustic emission technique has been utilized to study the damage of prefabricated unifurcated sandstones with similar materials, the damage of uniaxial compression deformation [7], different ratios of the event and energy evolution laws of materials [8], true triaxial loading and unloading [9], uniaxial damage evolution [10], and the mechanical properties of combined coal rocks [11]. In terms of similar simulations, digital technology has been used to study the deformation damage of overburdened rock layers [1], surface subsidence [12], the excavation of oversized chamber groups [13], shock wave tunnel damage [14], protective layer mining [15], overburdened three-zone evolution [16], overburdened rock movement at different inclinations of mining [17], fissure evolution [18], the dynamic damage of shock-loaded tunnels [19], and seismic weak-face slope sliding [20]; and acoustic emission technology has been used to study the excavation of oversized section chamber groups [13], rockburst damage [19], and coal seam drilling instability [21].…”