Abstract
The occurrence of surface discontinuous deformations in post-mining areas is currently a significant and important problem, due to both the frequency of their occurrence and the threat they pose to public safety. This paper presents the results of research concerning the possibility of sinkhole formation in the areas of abandoned mining excavations. For the purpose of assessing the condition of the rock mass disturbed by the existence of numerous mining excavations, electrical resistivity tomography investigations were carried out for the selected area where mining was undertaken in the past at shallow depths and many underground workings accessing the deposit exist. The sinkhole hazard was also analysed theoretically with a new original model based on the solution of A. Sałustowicz’s pressure arch theory.
Highlights
Deformations Resulting fromIn recent years, there has been a move away from coal-based energy in Europe
After the liquidation of mines, some negative effects of mining activities are still observed [16]. They are associated with changes in hydrogeological conditions [17], gas release from underground workings connected to the surface [16,18], and the occurrence of surface discontinuous deformations—mainly sinkholes
This paper presents the results of research related to the determination of the degree of sinkhole formation hazard in post-mining areas
Summary
There has been a move away from coal-based energy in Europe. The high CO2 emissions associated with the production of energy from coal is causing climate warming. After the liquidation of mines, some negative effects of mining activities are still observed [16] They are associated with changes in hydrogeological conditions [17], gas release from underground workings connected to the surface [16,18], and the occurrence of surface discontinuous deformations—mainly sinkholes. Works performed in order to eliminate the risks associated with inoperative shafts begin with locating the shafts For this purpose, geophysical methods are used, the results of which can be verified by uncovering the ground [23,25,26]. This paper presents the results of research related to the determination of the degree of sinkhole formation hazard in post-mining areas This hazard is related to the presence of underground galleries and shallow mining workings. The possibility of sinkholes creation as a result of collapse of shallow mining workings was examined using the method developed by Strzałkowski [12,13]
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