We conduct a numerical investigation into the spatio-temporal evolution of excavation-induced disturbances around roadways in inclined coal–mudstone strata containing fracture networks. The intact rock is modeled using a Mohr–Coulomb plastic constitutive law to capture deformation and failure, while the displacement of...
Tunnel construction in shallow-buried fractured and swelling schistose rock formations is highly prone to large structural deformation issues. Taking the context of a tunnel located on the Xi’an–Ankang high-speed railway as background, thorough investigations were conducted into the arch crown subsidence, horizontal co...
Tunnel excavation in fair rock masses presents significant challenges due to complex stress redistribution and deformation mechanisms. This study develops and validates a full-scale three-dimensional finite element (3D FEM) model of a road tunnel excavated in fair blocky limestone in eastern Egypt using ABAQUS/CAE 2019...
Fracture evolution of rock–backfill composites (RBCs) under complex loading–unloading and dynamic disturbances is critical for stope stability in deep backfill mining. Using PFC3D, this study constructs numerical models of RBCs to investigate this process, considering burial depths (500, 1000, 1500, 2000 m), interface...
Efficient stimulation of heterogeneous sandstone reservoirs requires a comprehensive understanding of cross-layer hydraulic-fracture propagation and its controlling mechanisms. Taking the Jurassic Lianggaoshan Formation in the Sichuan Basin as the geological prototype, 300 mm cubic artificial specimens containing coars...
Crest cracking represents a pervasive structural hazard during the construction and operational phases of high earth-core rockfill dams (ECRDs); consequently, the development of history-matched numerical tools is rendered an engineering necessity to prevent catastrophic risks. To address the limitations inherent in tra...
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