ABSTRACT
This paper deals with a method of prognosis of the evolution of the earth surface deformations after an underground working of the ore deposits. The advantage of this method is that it uses exclusively topographic data measured at the terrestrial surface on profile lines, not being necessary to be known exactly the underground gaps, what it is difficult for the ore lens with the irregular forms. The prognosis model about the evolution of the subsidence trough presented in this paper, calculates the coefficients of a function that can estimate this evolution, and through extension, it is possible to obtain many informations about the future states of the subsidence trough.
