文中提出了以正态分布函数为预计模型、采用概率积分法预计参数预计极不充分采动情况下地表沉陷的方法 ,该方法直接采用下沉率为预计参数 ,解决概率积分法预计极不充分采动难以选取拐点偏移距的问题 ,提高极不充分采动情况下地表移动和变形的预计精度。 In this paper, a method of predicting the surface subsidence with the normal distribution function as the expected model and using the probabilistic integral method to predict the parameters under extremely inadequate mining is proposed. The method directly uses the sinking rate as the expected parameter to solve the problem that the probability integral method is extremely inadequate Mining difficult to select the inflection point offset problem, to improve the case of very inadequate ground movement and deformation prediction accuracy.