Stability analysis of deep coal mine main roadways for pumped hydropower lower reservoir storage
A Özarslan, H. Y. Aydiner, E. Koken, Michael Alber, M Kwasniewski, D Lydzba
proceeding (Uluslararası, Hakemli) | Yazar(lar): A Özarslan, H. Y. Aydiner, E. Koken, Michael Alber, M Kwasniewski, D Lydzba | Yıl: 2013 | Dergi/Kurum: ROCK MECHANICS FOR RESOURCES, ENERGY AND ENVIRONMENT | İndeks: WOS.ISTP — Özet: A grid compatible integration of fluctuating renewable energy from high capacity wind an
A grid compatible integration of fluctuating renewable energy from high capacity wind and solar energy farms to electricity systems requires large-scale energy storage methods and technologies. Currently widespread large-scale electricity storage installed is reservoir-based hydropower and Pumped Hydropower Energy Storage (PHES). Large storage volumes are necessary to deal with the relatively low volumetric storage density property of PHES plants. Investigations are made to benefit from the large volumetric storage potential of deep coal mine openings. Especially, main roadways of active and some closed hard coal mines are available and may be used as large lower reservoir volumetric storage openings for PHES plants. This paper address some basic rock engineering and stability issues associated with PHES projects in deep hard coal mines. Evaluations are made for safe and effective usage of the underground coal mine openings as PHES lower reservoir storage volumes.