Method for predicting residual deformation of extremely-insufficient mining ground surface of single narrow working face

The invention discloses a method for predicting residual deformation of an extremely-insufficient mining ground surface of a single narrow working face. The method is suitable for evaluating the stability of a coal mine goaf site. The method comprises the steps that firstly, the sum of the maximum yield and the stripping width of coal walls on the two sides of a goaf of the single narrow working face is calculated; secondly, the moving number and the deformation value of the ground surface of the goaf of the single narrow working face before yield stripping of the coal walls on the two sides are predicted; thirdly, the sum of the width of the goaf of the single narrow working face and the maximum yield and the stripping width of the coal walls on the two sides of the goaf is calculated, and the moving number and the deformation value of the ground surface of the goaf after yield stripping of the coal walls on the two sides are predicted; and finally, the difference between the yield value of the coal walls on