In this thesis the horizontal geodetic network, established for deformation monitoring of the tailings disposal site Jazbec, is discussed. In the first section, basic principles of network design and geodetic methods for measurement of displacements and deformations are briefly presented. Afterwards, the procedure of Hannover approach to deformation analysis is described. The procedure for testing point displacement, that use the ratio between the displacement's size and its accuracy as a test statistic, is also explained. In the middle section, the deformation analysis for reference points of the network Jazbec is carried out. The data that is used, was collected in seven epochs. Instability of reference points S5, S4 and some minor statistically significant displacements of some other reference points are identified. In the last section, the displacements of unstable reference and object points are calculated and statistically tested. The displacements are also graphically presented.