Stress Characteristics near Major Geological Formations in Underground Coal Mines
In the vicinity of major geological formations(e.g.,faults,shear zones and fault folds),the stress state and geotechnical conditions tend to change significantly,resulting in major instability and safety hazards in mines,such as coal breakouts,roof fall,water inrush and gas outburst.In order to understand and quantify the stress state near major geological formations,comprehensive on-site monitoring was carried out near the faults of the Dongsheng Coal Mine in Shanxi Province,the monitoring data was analyzed in detail,the stress anomalies near the faults were identified,and three-dimensional numerical simulations were performed to study the distribution of stress and the concentration of strain energy in the impact ground pressures,which provide a basis for the evaluation of the risk of impact ground pressures.
万方数据
维普
