中文摘要：

倾向主断面的沉陷预计，是开采沉陷学研究的重要内容和难点。针对目前倾向主断面开采沉陷预计的剖面函数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，研究了倾向主断面地表下沉曲线的特征，用数学分析的方法提出了一种倾向主断面下沉曲线的拟合公式。这种拟合公式考虑了煤层倾向的对下沉曲线的影响，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，提出的拟合函数与实测资料吻合程度较高。

英文摘要：

It is important content to study of the subsidence on the incline-section of the basin of the surface subsidence. The traditional function model of the main section plane subsidence has some weak points that the mathematical formula is too complex and the parameter and the origin of coordinate are not easy to obtain. Surveyed the feature of the curve of the subsidence on incline-section of the basin, a new function model which can fit well the curve of the main section subsidence of the subsidence basin has been made out in term of the observation data. This new model has some merit that the mathematical formula is simple and the parameter is also easy to obtain in practical research work compared to other subsidence pre- diction models. The observation data of the main section subsidence of a certain mine is accordance with the model . It is proved that this new model is fit well the curve and it can be used to predicted the subsidence of the surface above rectangle goal due to mining underground.