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THE EFFECTS OF DISCONTINUITIES ON GROUND CONTROL IN EAST ALBORZ COAL MINES, SHAHROOD, SEMNAN PROVINCE, IRAN

Mohammad Javanshir Giv

First published: 2011-06-20https://doi.org/10.5593/sgem2011/s03.143View metrics

Abstract

A comprehensive review of published books and articles shows that discontinuities, especially joints within coal-bearing depos its are important features that must be considered during mine planning and desi gn. Less attention has been paid to orientations of joint sets and other disc ontinuities relative to mining face in proposed rock mass classification systems. In fact the structural competence of mine roof rock is determined primarily by the discontinuities that weaken the rock fabric. In this paper the effect of joint characteristics including sp acing, persistence, strike and dips was considered on roof rock behavior. By regard ing to the conditions of East Alborz coal mines, shahrood, Iran have been proposed a new classification system. The obtained results of this method show that this pa rameter has the most significant effect on the roof stability in coal mines. Key words: Discontinuities, Roof rock behavior, Coal mine, East Alborz coal field.

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Publication details

Title
THE EFFECTS OF DISCONTINUITIES ON GROUND CONTROL IN EAST ALBORZ COAL MINES, SHAHROOD, SEMNAN PROVINCE, IRAN
Authors
Mohammad Javanshir Giv
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference
Publisher
Stef92 Technology
Year
2011
Pages
Not available yet
ISSN
1314-2704
ISBN
Not available yet
Language
en
Publication type
Conference Paper
References7

  1. Alexander, R. Papp., (1998), "ATLAS OF COAL GEOLOGY, vol 1. Joints".

  2. Bieniawski, Z.T., (1984), “Rock mechanics design in mining and tunneling”. A.A. Balkema, Rotterdam.

  3. Canbulat and Dlokweni., (2002), “Rating sy stem for coals mine roofs”, Draft Final Report, Project No: COL 812 Safety in Mines Research Advisory Committee.

  4. Hucka, B.P., (1991), "Cleat and joint sy stem evaluation in coal seams and zones of the Blackhawk Formation and Ferron Sandstone Member of the Mancos Shale Formation for mine planning and site char acterization in the Book Cliffs, Wasatch Plateau, and Emery coal fields, Utah, in D.C).

  5. Lama, R.D., (1998), “Mechanical Properties of Rocks”, Handbook, Trans Tech Pub.

  6. Pattison, C.I., C.R. Fielding, R.H. McWa tters, and L.H. Hamilton, (1996), "Nature and origin of fractures in Permian coals from the Bowen Basin, Australia, in R.A. Gayer and I. Harris, eds., Coalbed Methane and Coal Geology: Geol ogical Society (London) Special Publication 109, p. 133-150".

  7. Terzaghi, K., (1946), "Rock defects and loads on tunnel support", Rock tunneling with Steel Support. Commercial Shearing Co., Youngstown, Ohio.15-99.

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