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Induced micro seismicity due to raising mine water level in former coal mines in the eastern Ruhr area (Germany)

Rische, Martina; Fischer, Kasper D.; Allgaier, Felix; Friederich, Wolfgang

Abstract (englisch):
FloodRisk is an interdisciplinary project focusing on the effects of mine water level rise in abandoned coal mine regions in Germany. Such effects are heterogeneous ground uplift, stress changes due to the change in pore pressure and the reactivation of potential faults. One of the most directly measurable effects is certainly the induced micro seismicity. It is known from previous studies that the flooding of old mines can lead to a renewed increase level in induced micro seismicity in these regions.
In this study the relationship between mine water rise, fluid-induced stress changes and induced seismicity in the Haus Aden dewatering area in the eastern Ruhr area (Germany) will be investigated in more detail.
For this purpose, we operate a network of currently 21 short period seismic stations in the region of the former "Bergwerk Ost" colliery, which had the highest seismicity rate in the Ruhr area during active underground coal mining. This network is still to be expanded to cover the entire water drainage area, about 30 Raspberry Shake sensors are waiting for the possibility of installation.
Nevertheless, the existing network registered almost 1000 induced micro seismic events in a magnitude range from -0.7 up to 2.6 MLv. ... mehr

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Originalveröffentlichung
DOI: 10.5194/egusphere-egu21-13040
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Vortrag
Publikationsmonat/-jahr 04.2021
Sprache Englisch
Identifikator KITopen-ID: 1000131771
Veranstaltung EGU General Assembly (2021), Online, 19.04.2021 – 30.04.2021
Bemerkung zur Veröffentlichung EGU21-13040
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