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Vol 206
Pages:
74
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Topical issues in mining of ore and nonmetallic minerals

Rock displacements in the vicinity of the face of the unsupported excavation

Authors:
E. R. Kovalevskii1
S. P. Mozer2
M. A. Karasev3
N. I. Kosukhin4
About authors
  • 1 — National Mineral Resources University (Mining University)
  • 2 — National Mineral Resources University (Mining University)
  • 3 — National Mineral Resources University (Mining University)
  • 4 — National Mineral Resources University (Mining University)
Date submitted:
2016-10-26
Date published:
2013-07-01

Abstract

The relationship between displacements of the excavation contour and distance to the excavation face is obtained in the paper. The relationship allows to calculate support pressure with the account for delay of the support installation. Some calculation results of axial forces in the support are given. Calculations are made on the basis of finite-element method with three dimensional models.

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References

  1. Chern J.C., Shiao F.Y., and Yu C.W. An empirical safety criterion for tunnel construction. // Proc. Regional Symp. on Sedimentary Rock Engeneering. Taipei, Taiwan, 20-22 November, 1998.
  2. Hoek E. Tunnel support in weak rock // Proc. Regional Symp. on Sedimentary Rock Engeneering. Taipei, Taiwan, 20-22 November, 1998.
  3. Hoek E. Support for very weak rock associated with faults and shear zones // Proc. International Symposium on Rock Support and Reinforcements Practice in Mining. Kalgoorlie, Australia, 14-19 March, 1999.

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