Part of the Czech Upper Silesian Coal Basin (USCB) in the area of interest for the PostMInQuake project can be divided according to natural conditions on three main sub-basins: (i) Ostrava sub-basin, (II) Petrvald sub-basin and (iii) Karvina sub-basin. Seismological monitoring was created in area of Karvina sub-basin due to high rockburst risk in 1980s as a part of rockburst prevention system.
The Polish part of the Upper Silesian Coal Basin (USCB) in the area of interest for the PostMinQuake project we can divide for area with still working mines and areas with closed mines (see Fig. 5). The north- eastern part of the USCB is the area of already closed mines. The last of them – Kazimierz Juliusz – was closed in 2016. Earlier, due to the safety reasons the water table was lowered to the approximate depth 700 m. Currently, the process of flooding the mine is in progress.
In France, coal mining activity in Provence basin has left many underground voids at different depths that causes land subsidence or collapses in areas of high population density. The coal basin of Provence is located about 20 km NNE of Marseille (Bouches-du-Rhône) and covers ~60 km². The industrial exploitation lasts from the first half of the 19th century to 2003.
Germany has been one of the largest coal producers in Europe for many years. It had many coal mines located in different regions. The post mining problems, specific to the project objectives revealed at the coal field Erkelenz, near the border with Netherlands. In this area, mining was carried out by Dutch and German operators. The hard-coal field of Aachen and South Limburg provide a cross-country deposit between Germany and the Netherlands; this coalfield is an extensively spread hydraulic system.