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Reduction of surface subsidence risk by fly ash exploitation as filling material in deep mining areas

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  • Trčková Jiřina
  • Šperl Jan

Abstract

The possibility of filling empty underground spaces, which exist owing to the extraction of mineral raw materials, with fly ash and cement fly ash mixes has been studied for the purpose of reducing the impact of deep mining on the surface. The method of physical modelling was used to study the behaviour of fly ash mixes deposited in extracted mine spaces. The models were constructed for two different geometries of underground extracted mine spaces: into cavities of the type of large slits created in the course of mining in steeply lode deposits without subsequently filling the empty space and in vertical shafts of rectangular or circular cross-section with horizontal side headings that have partly caved in due to mine shocks or other seismic events. Copyright Springer Science+Business Media B.V. 2010

Suggested Citation

  • Trčková Jiřina & Šperl Jan, 2010. "Reduction of surface subsidence risk by fly ash exploitation as filling material in deep mining areas," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 53(2), pages 251-258, May.
    • Handle: RePEc:spr:nathaz:v:53:y:2010:i:2:p:251-258
    DOI: 10.1007/s11069-009-9425-9
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    Cited by:

    1. Wenqi Huo & Huaizhan Li & Guangli Guo & Yuezong Wang & Yafei Yuan, 2023. "Surface Subsidence Prediction Method for Backfill Mining in Shallow Coal Seams with Hard Roofs for Building Protection," Sustainability, MDPI, vol. 15(22), pages 1-18, November.
    2. Dayang Xuan & Jialin Xu, 2014. "Grout injection into bed separation to control surface subsidence during longwall mining under villages: case study of Liudian coal mine, China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 73(2), pages 883-906, September.

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