Purpose. The study of the influence of mine water rising level of longwalls gob on the activation of deformation processes on the undermined earth’s surface. Methods. In the study was used the method of engineering and graphic analysis for calculating the parameters of the displacement trough according to the normative method. The finite element method that was implemented in the Ansys code was used to carry out studies of the influence of mine water rising level on the deformation of the earth’s surface. The problem is solved in an elastic-plastic setting, taking into account the heterogeneity of rocks. Findings. In accordance with the conditions of the southern part of the mine field, a landslide trough was drawn, and a plan of subsidence isolines was constructed with surface infrastructure objects. Surface objects, the risk of destruction of which increases when the mine water level rises, have been identified. The position of the cut line, which characterizes the most dangerous position, is determined. After the analysis and generalization of the results of the numerical experiment, it was established that the rise of mine water level in the gobs of 1th and 2th southern longwall of the coal seam l1 of Kotlyarevsky mine leads to the activation of landslides on the earth’s surface. At the same time, the vertical subsidence in the displacement trough in the case of flooding (to the full height of the zone of ordered destruction) increases by 22.4%, and the width of the trough increases disproportionately – by 1.3%. This contributes to a significant increase in hazards for surface infrastructure objects due to the increase in slopes and curvatures. Originality consists in establishing of the features of changes in surface displacement in the area of undermined earth’s surface due to the rise of mine water level. Practical implication. The results of the study can be used in the prediction of subsidence and other elements of landslides in the displacement trough, which are activated due to the rise of mine water level. At the same time, the possibility of timely planning and development of a set of measures to protect surface infrastructure objects from the negative impact of undermining is ensured. Keywords: earth’s surface displacement, surface undermine, landslides, displacement trough, rise of mine water level, surface displacement forecast.

Purpose. Analysis of modern studies of the processes of deformation of rock strata in the undermine zone during the development of coal seams in order to determine the general features and views that allow to substantiate the mechanistic model of deformations and subsidence. Methods. The work uses the method of engineering analysis, synthesis and generalization of information from various literary sources. Findings. Retrospective analysis of scientific studies devoted to the consequences of underground mining of stratum minerals by longwalls allowed to determine the main components of the process of deformation and movement of rocks in the undermine zone. Based on the conducted analysis, it was concluded that in the process of subsidence in the rock strata during the excavation of coal seams with the roof collapse method, different scientists distinguish from three to nine zones. The main three zones, which are components of all existing hypotheses today, are: the collapse zone, the zone of complete displacements, the zone of destruction. Based on the formation of these three zones, it is advisable to develop a schematic diagram of models for prognostic research. Originality consists in establishing the general mechanism of deformation and movement of the rock strata in the zone of longwall undermine. Practical implication. The research results can be used in the selection and justification of the mechanistic model, which is the basis of the calculation scheme during mathematical modeling. This will allow to provide high-quality results of forecasting subsidence of the earth's surface by longwall mining, as well as to adequately assess the effectiveness of measures to protect surface infrastructure objects. Keywords: earth's surface displacement, surface undermine, landslides, displacement trough, surface displacement forecast.