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以上薄下厚近距离煤层群联合开采为工程背景,通过理论分析、数值模拟和现场实测,分析了工作面错距的主要影响因素及不同错距下的应力分布。现场实测结果表明,下煤层工作面支架静载荷特征明显,工作状态良好,实现了安全高效开采。
Based on the above-mentioned project, the coal seam group mining with thin thickness and close distance is taken as the engineering background. Through theoretical analysis, numerical simulation and on-site measurement, the main influencing factors and the stress distribution under different pitches are analyzed. The field measurement results show that the static load characteristics of the coal seam face support are obvious, the working condition is good, and the safe and efficient mining is realized.