倾角50°左右煤层开采沉陷预计模型选择研究

Research on Selecting Dip 50° Angle Coal Mining Subsidence Prediction Model

为能够更准确地预计倾角50°左右煤层开采引起的地表沉陷,通过相似材料实验获取大量的实验数据,实验数据处理后得到地表静态下沉和水平移动曲线。分别基于概率积分法和皮尔森Ⅲ型函数法预计模型拟合地表静态下沉和水平移动曲线,分析拟合的参数、误差相关性以及中误差的情况,对比得出皮尔森Ⅲ型函数法更适合于倾角50°左右煤层开采沉陷预计。

In order to accurately predict dip surface subsidence caused by 50° angle coal seam mining,by similar material experiments get a large number of experimental data,after the experiment data processing get surface static sinking and level moving curve.Based on probability integral method and Pearson Ⅲ type function method predicts model fitting surface static sinking and moving horizontal curve,analyses the fitting parameters,error correlation and middle error status,the contrasting shows that Pearson Ⅲ type function method is more suitable for dip 50° angle coal mining subsidence prediction.