Horizontal strains over the length of single section of observation line – problem analysis

The problem of studying values of horizontal strains occurring over the length of single sides of observation line has been raised in the article. A particular attention has been paid to relevance of this issue in the aspect of assessments made with respect to hazards of mining areas. Lack of knowledge of factually occurring values of horizontal strains in the aspect of commonly determined mean index values (assigned for the entire side length) in case of substantial mutual differences may result in low credibility of prepared assessments. It may also explain arising damages to facilities on lands of thus defined category of a mining area.