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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 existing profile function models of mining subsidence such as negative exponential function and hyperbolic tangent function are analyzed. The models such as hyperbolic tangent function have the disadvantages of too complicated expression, origin of coordinates and difficult parameter determination in actual use. The characteristics of surface subsidence observation data, a new main section fitting function of mining subsidence is proposed. The expression of this new fitting function is simple, and it is easy to determine the relevant parameters in practical work. The verification of the measured data of a mine indicates that the proposed fitting function is in good agreement with the measured data.