Spatiotemporal evolution mechanisms of groundwater seepage-chemical coupling fields in Pingshuo mining area DOI
Fayuan Yan, Enzhi Wang, Yangyang Guo

и другие.

Physics of Fluids, Год журнала: 2025, Номер 37(6)

Опубликована: Июнь 1, 2025

This study investigates the Jinggong No.1 Mine, No.3 and Xiali Yuan Mine in Pingshuo mining area. Through field sampling hydrochemical-seepage coupled tests, we reveal seepage-solute dynamic behaviors of groundwater systems across different mines. By analyzing fluid pressure gradients, ion concentration fields, permeability coefficients from multiple aquifers (surface water, goaf sandstone fissure Ordovician limestone water), combined with Piper trilinear diagrams solute transport models, decipher controlling mechanisms seepage pathways on hydrochemical evolution. Key findings include: The high total dissolved solids (TDS) (>4000 mg/L) SO42- dominance (>84%) water stem evaporation-concentration effects low-velocity zones (permeability coefficient K = 1.2 × 10−6 m/s, significantly lower than other mines); differentiation is governed by heterogeneous fields (hydraulic gradient 0.15 induces mixing, while stable Mines maintains 5 10−5 m/s); temporal increase TDS (annual growth rate 18%) reflects accelerated vertical along fault (Darcian velocity rising 0.3 to 0.8 m/d), driving migration Ca-Mg-SO4-type fronts. establishes quantitative response relationships between indices parameters, providing theoretical support for hydrodynamic regulation water-inrush channel identification areas.

Язык: Английский

Spatiotemporal evolution mechanisms of groundwater seepage-chemical coupling fields in Pingshuo mining area DOI
Fayuan Yan, Enzhi Wang, Yangyang Guo

и другие.

Physics of Fluids, Год журнала: 2025, Номер 37(6)

Опубликована: Июнь 1, 2025

This study investigates the Jinggong No.1 Mine, No.3 and Xiali Yuan Mine in Pingshuo mining area. Through field sampling hydrochemical-seepage coupled tests, we reveal seepage-solute dynamic behaviors of groundwater systems across different mines. By analyzing fluid pressure gradients, ion concentration fields, permeability coefficients from multiple aquifers (surface water, goaf sandstone fissure Ordovician limestone water), combined with Piper trilinear diagrams solute transport models, decipher controlling mechanisms seepage pathways on hydrochemical evolution. Key findings include: The high total dissolved solids (TDS) (>4000 mg/L) SO42- dominance (>84%) water stem evaporation-concentration effects low-velocity zones (permeability coefficient K = 1.2 × 10−6 m/s, significantly lower than other mines); differentiation is governed by heterogeneous fields (hydraulic gradient 0.15 induces mixing, while stable Mines maintains 5 10−5 m/s); temporal increase TDS (annual growth rate 18%) reflects accelerated vertical along fault (Darcian velocity rising 0.3 to 0.8 m/d), driving migration Ca-Mg-SO4-type fronts. establishes quantitative response relationships between indices parameters, providing theoretical support for hydrodynamic regulation water-inrush channel identification areas.

Язык: Английский

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