FLAC3D Simulation Results for Stress and Displacement in Steeply Inclined Coal Seam Mining

A FLAC3D numerical simulation investigates the asymmetric evolution of stress and displacement fields during the horizontal layered mining of a steeply inclined, extra-thick coal seam. The model is based on the +575 m level 45# coal seam in the Wudong Coal Mine, Urumqi. Results quantify stress concentration factors and displacement gradients, identifying a target zone for gas drainage.

Use Cases

• Modeling stress redistribution in underground mines based on the described 'ear-shaped' stress field distribution.
• Analyzing floor heave and roof deformation based on the three-stage displacement evolution pattern ('V-type → U-type → basin-type').
• Optimizing gas drainage strategies based on the identified 15-meter target zone within the deep floor stress relief area.
• Assessing the impact of mining parameters based on the parametric analysis of layer thickness and burial depth effects.

Strengths

• The simulation is grounded in a specific engineering case from the Wudong Coal Mine, providing real-world context.
• Results include quantified relationships, such as a 60% increase in floor stress concentration when mining thickness rises from 5 m to 25 m.
• The description details specific spatial and temporal patterns, like the displacement gradient reaching 2.0 mm/m at a 50 m step distance.

Limitations

• The dataset is a 4.1 MB DOCX file; the underlying simulation data (e.g., raw node/element values) is not directly accessible in a structured format.
• Column-level documentation is absent; field semantics must be inferred from the paper's text after download.
• Row count is unknown, which may limit suitability assessment for quantitative analysis.

Provenance

Source

Jun Liu via figshare.

Collection Method

Generated using the FLAC3D numerical simulation method.

Freshness

Last updated 2026-06-01 05:23:05; freshness should be verified.

Geography

Based on the +575 m level 45# coal seam in the northern mining area of the Wudong Coal Mine, Urumqi.