PREDICTION OF SURFACE SUBSIDENCE CAUSED BY UNDERGROUND MINING USING A NON LINEAR FINITE ELEMENT PROCEDURE. NUMERICAL MODELS IN GEOMECHANICS. NUMOG III. PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM HELD IN NIAGARA FALLS, CANADA, 8-11 MAY 1989

A numerical procedure based on the nonlinear incremental-iterative finite element technique has been developed to predict subsidence and collapse due to underground mining. The procedure uses an elasto-plastic constitutive model to represent the nonlinear behavior of rocks, and an accurate algorithm to simulate the process of underground mining or extraction. The procedure is used to perform a detailed analysis of the collapses which occurred in the blue goose lease of the picher mining district in northeastern Oklahoma. In the presentation of numerical results emphasis is given to identify the manner in which stresses are distributed (magnitude and locations) before and after excavation. The effects of surface loadings due to dumping of chat pile on the collapsed region are also investigated.(a) for the covering abstract of this conference see IRRD 824029.

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  • Corporate Authors:

    Elsevier Science Publishers

    Crown House, Linton Road
    Barking, Essex IG11 8JU,   England 
  • Authors:
    • Najjar, Y
    • Zaman, Musharraf
    • Ahern, J
  • Publication Date: 1989

Language

  • English

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Filing Info

  • Accession Number: 00497963
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 1-85166-425-4
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1990 12:00AM