济三煤矿3_下煤层开采沉陷预测模型

Prediction Model of Mining Subsidence for 3_下 Coal Seam in Jining No.3 Coal Mine

以综放面支承压力分布规律研究成果为基础,建立了济三煤矿3下煤层开采沉陷预测模型。利用不同深度、不同工作面长度的两个工作面的开采沉陷实测结果耦合,解决了济三煤矿3下煤层开采沉陷预测模型中有关“常数”的确定问题。现场实测证明,所建立的开采沉陷预测模型的预测精度能满足客观实际的要求。

A prediction model of mining subsidence for the 3下 coal seam in Jining No. 3 Coal Mine was established on the basis of research results of abutment pressure distribution laws in fully mechanized top - coal caving face. The constant parameters of prediction model of mining subsidence for the 3下 coal seam were solved by coupling the survey results of actual mining subsidence of two working faces with different mining depth and face length. The in - situ survey proved that the precision of this model can meet the needs of actual engineering.