Purpose. To estimate displacements in the neighborhood of a development working driven under mining and geological conditions of mines in Western Donbas and situated within the area of mining effect for further improvement of full-scale measurements being an important stage in the process of geomechanical model verification. Methodology.A number of sequential operations of numerical modeling were involved making it possible to demonstrate deformational processes progressing in the neighborhood of "mine working-longwall" geotechnical system with a probability of 0,95 including those resulting in loss of elastoplastic complicated technical "mine working-pillar-rock mass" system being developed gradually within the rock mass. Findings. The results of the numerical experiment helped determine rules of stratified rock mass formation around a mine working located within mining space effect in terms of difference levels of protective structure rigidness within longwall as well as estimate its effect on the integrity of entire geomechanical system. Originality. For the first time the fact of both vertical and horizontal displacements of far point of deep benchmark station in the context of varying width of protective structure in longwall has been proved and their regularities have been determined. Practical value. The determined regularities can be quite useful while estimating displacements of floor rocks and roof rocks in the process of full-scale measurements performed with the help of the leveling method.

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