摘要
在断层、剪切带、褶皱等主要地质构造附近,应力状态和岩土条件往往会发生显著变化,造成突煤、冒顶、突水、瓦斯突出等矿山重大不稳定和安全隐患.为了解和量化主要地质构造附近的应力状态,对山西省东升煤矿断层附近区域进行综合现场监测,详细分析监测资料,识别断层附近应力异常,采用三维数值模拟研究了冲击地压的应力分布和应变能集中情况,为冲击地压危险性评价提供依据.
Abstract
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.
维普
万方数据