Abstract

Mining processes have a strong impact on the surrounding environment. The effects of mining activities are particularly visible in areas where mines have been established. The project "Digital-Twin - Integrated Geomonitoring" develops a research methodology for geomonitoring post-mining processes, using the example of the closed Prosper-Haniel coal mine. The project is carried out by the Research Center of Post-Mining at the Technische Hochschule Georg Agricola, University in cooperation with the Geological Survey of North Rhine-Westphalia. The project is funded by the RAG-Stiftung.

In the geomonitoring of post-mining processes, an important aspect is the use and integration of modern research methods, equipment and instruments, which make it possible to understand the causes of phenomena occurring in the environment. The "Digital-Twin" project makes use of data obtained: from satellite observations (ESA and NASA space programmes), own drone flights, as well as the use of geological and mining data, which are collected over the entire duration of the mining activity. These include: mining maps, geological maps and borehole reports, which are the basis for the development of three-dimensional rock mass models. The modelling gives us knowledge about the geological structure. The use of modern methods - mobile GIS - makes it possible to verify previously obtained results and to document changes occurring on the Earth's surface.

The integration of various disciplines and methods makes it possible to understand the causes of problems related to environmental and mining processes. In this article, the methods and first results of geomonitoring of post-mining processes, which are used in the "Digital-Twin" project, will be presented.