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Vol 174
Pages:
167-170
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RUS

Application of risk assessment concept in Estonian mining industry

Authors:
Sergei Sabanov1
Jyri-Rivaldo Pastarus2
Oleg Nikitin3
About authors
  • 1 — Tallinn University of Technology
  • 2 — Tallinn University of Technology
  • 3 — AS Eesti Põlevkivi
Date submitted:
2007-07-10
Date accepted:
2007-09-20
Date published:
2008-03-17

Abstract

The paper deals with the problems of risk assessment in Estonian oil shale mines, where room-and-pillar mining with blasting is applied. This paper examines the risks associated with the application of a new room-and-pillar mining technology using modern machines at the Estonia mine. The new mining technology is based on the transition from packet blasting to emulsion blasting, from 2.0 m boreholes to 4.0 m boreholes (ATLAS Copco machine) and on a new undercutting method (SMAG machine). With this equipment with the new technique, the advancement speed at the entrance reached 4 m. As a result of this increase in advancement speed, situations with unsupported room lengths of up to 5.5 m can be expected with a decrease in the stability of the immediate roof. Various factors relevant for Estonian oil shale mines have been identified. The study showed that the probability and consequences of the risk are acceptable. The used concept of the risk assessment method is applicable to Estonian oil shale mines. It can be used for different purposes and levels. The results of the risk assessment are of particular interest for practical purposes.

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References

  1. Calow P. Handbook of environmental risk assessment and management. Oxford, Blackwell Science, 1998.
  2. Pastarus J.-R.; Sabanov S. (2005). Concept of risk assessment for Estonian oil shale mines // Proc. 5th International conference «Environment. Technology. Resources», Rezekne, June 16-18, 2005. Р.237-242.
  3. Nikitin O., Sabanov S. (2005). Immediate roof stability analysis for new room-and-pillar mining technology in «Estonia» mine // Proc. 5th International conference «Environment. Technology. Resources», Rezekne, June 16-18, 2005. Р.262-269.

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