Analýza souboru přesných inklinometrických měření ve vztahu k projevům svahových pohybů a poddolování

Abstract

Undermining caused by underground mining of black coal in the Karviná part of the Ostrava-Karviná District clearly affects the changes in the engineering-geological conditions, while apart from the above identified facts it also influences the changes in the state of stress in slopes, structure and physical-mechanical properties of the rock material, regime of ground water level changes, etc. The identification of undermining impact should become an automatic part of each engineering-geological survey or research in all localities in which there is a potential influence of mining activities based on their geographical position. This can be easily identified comparing the position of the locality expanding the working districts stated in the geopool or mining offices. One of manifestations of mining activity is its studied potential influence on the initiation and reactivation of slope movements. Adequate attention has not yet been paid to these problems. It was combination of inclinometric measuring correlated with isocatabase maps in different time sections retrospectively as well as on forecast ground deformation parameters, which proved optimal methodology for the identification of the influence of underground mining on the studied slope deformations. Localization of inclinometric measuring on boreholes in the active part of slope deformation as well as in near nonaffected vicinity was important, which in case of inclination of both boreholes is evidence of undermining impact. Thus, the work should contribute to a more objective knowledge of these problems of interest to the professional public and also for the state administration to solve problems associated with the utilisation and settlement of such affected areas. With regard to present trends and a permanent lack of places suitable for building development and other purposes, it is necessary to observe these processes, to understand them and for this knowledge to be applied to the utilisation of the mining landscape.