Year: 2025
Type: article
Abstract: This study investigates water inrush mechanisms in goaf roof strata through multi-scale analysis of fracture network evolution and seepage dynamics. A three-zone overburden model was established via PFC3D simulation and validated with experimental data. Coupled PFC-CFD simulations reveal that seepage is governed by the interplay of pressure gradients, fracture pathways, and flow rates. Key findings include: nonlinear attenuation of pressure gradients amplifies flow velocities in dominant channels; increased injection rates widen effective channels by 86%; and high-velocity flow enhances permeability through erosion, resulting in significant directional anisotropy. These results provide insight into the positive feedback mechanisms controlling dynamic seepage in fractured rock masses.
Source: Scientific Reports
Authors: Jiaxu Dong, Hao Liu, Wenbin Sun, Xinxue Liu, Zhijie Tao
Institution: Shandong University of Science and Technology
Language: English
Subfield: Safety, Risk, Reliability and Quality
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,690
Award: G7194491363
OpenAlex ID: W4416810735