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Investigation into Factors Affecting Roadway Deformation in the Selby Coalfield

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Abstract

The introduction of roofbolting in the UK coal mining industry has been well documented and is an example of reinforcement design utilizing a ‘design by measurement’ or ‘observational approach’. This has involved detailed monitoring of rock strata movements and rockbolt loads at a large number of sites. Analysis of roadway deformation monitoring information from across the Selby coalfield provided an ideal opportunity of assessing how geological and stress variations affect the stability of reinforced coal mine roadways. Statistical analysis of this data has confirmed the detrimental effects of maximum horizontal stress direction and relatively weak roof geology on the magnitude of roof deformation. Further analysis has led to the development of a roof lithology index for assessing the quality of the immediate roof geology and the use of geological hazard analysis for providing useful information for the development of a stability index for assessing support requirements of existing and future roadways. This investigation has also verified previous observations regarding mechanisms controlling roadway deformational behaviour and highlights the importance of the ‘site-specific’ nature of reinforcement design.

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Authors and Affiliations

  1. Rock Mechanics Technology Limited, Bretby Business Park, Ashby Road, Stanhope Bretby, Burton-on-Trent, Staffordshire, DE15 0QD, UK

    F.L. Kent & P.F.R Altounyan

  2. University of Exeter, Camborne School of Mines, Trevenson, Pool, Redruth, Cornwall, TR15 3SE, UK

    J.S. Coggan

Authors
  1. F.L. Kent
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  2. J.S. Coggan
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  3. P.F.R Altounyan
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Kent, F., Coggan, J. & Altounyan, P. Investigation into Factors Affecting Roadway Deformation in the Selby Coalfield. Geotechnical and Geological Engineering 16, 273–289 (1998). https://doi.org/10.1023/A:1008828832473

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  • DOI: https://doi.org/10.1023/A:1008828832473

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