Book cover for Design and Performance of Underground Excavations: ISRM Symposium — Cambridge, U.K., 3–6 September 1984
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Design and Performance of Underground Excavations: ISRM Symposium — Cambridge, U.K., 3–6 September 1984
Edited by
E. T. Brown
E. T. Brown
Department of Mineral Resources Engineering, Imperial College of Science and Technology, London, U.K.
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J. A. Hudson
J. A. Hudson
Department of Mineral Resources Engineering, Imperial College of Science and Technology, London, U.K.
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Author and Other Information
Emerald Publishing Limited
DOI:
https://doi.org/10.1680/dapoue.35652
ISBN print:
978-0-7277-4008-3
Publication date:
1984
Book Chapter

43 Support for underground openings in poor rock in a Jinchuan nickel mine

By
Yu Xuefu;
Yu Xuefu
Beijing University for Iron and Steel Technology, Bejing, China
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Li Jiangong
Li Jiangong
Jinchanuan Nonferrous Metal Corporation, Jinchuan, Gansu, China
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Author and Other Information
Yu Xuefu
Beijing University for Iron and Steel Technology, Bejing, China
Li Jiangong
Jinchanuan Nonferrous Metal Corporation, Jinchuan, Gansu, China
Doi:
https://doi.org/10.1680/dapoue.35652.0043
  • Published:
    1984

Various types of underground support failed one after another during excavation of development opening in poor rocks formations in Jinchuan Mine, because the incorrect supporting principle and method have been used for about 14 years. Basing on a new principle, this paper presents a new method, which includes two-step supporting treatments. After finishing the first step shotcrete-rockbolting supporting treatment, the displacements of rocks around the opening have been successfully controlled less than 180–200 mm, and the displacement for linings less than 140–150 mm. If the displacement is more than the above mentioned data, a second step control supporting treatment is necessary.

  • GEOLOGICAL CONDITION IN JINCHUAN MINE

  • THE CAUSE OF FAILURE IN SUPPORTING DURING THE PAST 14 YEARS IN DEVELOPMENT OPENING

  • PRINCIPLE OF SUPPORTING OPENINGS IN POOR ROCK AND ITS DESIGN IN JINCHUAN MINE

  • SOME RESULTS IN ENGINEERING PRACTICE

  • ACKNOWLEDGMENT

  • REFERENCE

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