主断面沉陷曲线的复合幂函数模型

分析了现有的开采沉陷预计的剖面函数模型如负指数函数、双曲正切函数等模型具有表达式过于复杂,坐标原点、参数在实际使用时较难确定等缺点,研究了矩形采空区上方地表沉陷观测数据的特征,提出了一种新的开采沉陷预计的主断面拟合函数。这种新的拟合函数表达式简单,在实际工作中容易确定相关参数。某矿山的实测资料验证说明,提出的该拟合函数与实测资料吻合程度较高。

The multiple power function model of the main ground subsidence basin sections due to underground mining

The traditional function model for the main section subsidence such as the negative exponential function model and the hyperbolic tangent function model have some weak points that the mathematical formula is too complex and the parameters are not easy to obtain.In this paper,a multiple power function model for the main section subsidence was proposed in term of the observation data.This new model had some merit that the mathematical formula is simple and the parameters are also easy to obtain.The model curve was accordance with the observation data of the main section subsidence of a certain mine.It was proved that this new model was correct and it could be used to predict the subsidence of the surface above rectangular goal due to underground mining.