中文摘要：

针对现有的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，研究矩形采空区上方地表沉陷观测数据的特征，提出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。一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：

The existing section function for mining subsidence prediction has several shortcomings, such as complex expression, uncertainty of coordinates origin and parameters in application. The features of observing data in the ground subsidence of rectangular goal are studied and a new fit function of main section is proposed for mining subsidence prediction. This new function has some merit that the mathematical formula is simple and the parameter is also easy to identify in practices. It is proved that the results of this new function is fit well with on-site survey .