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Ground anchorages and anchored structures: Proceedings of the international conference organized by the Institution of Civil Engineers and held in London, UK, on 20–21 March 1997
Edited by
G. Stuart Littlejohn
G. Stuart Littlejohn
University of Bradford
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Author and Other Information
Emerald Publishing Limited
DOI:
https://doi.org/10.1680/gaaas.26070
ISBN electronic:
978-0-7277-4015-1
ISBN print:
978-0-7277-2607-0
Publication date:
1997
Book Chapter

Stabilization of a Large Rock Wedge in the Underground Powerhouse of the Pergau Hydroelectric Project, Malaysia.

By
P M Varley;
P M Varley
1Knight Piesold Limited, Ashford, Kent, England.
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R J H. Parkin;
R J H. Parkin
1Knight Piesold Limited, Ashford, Kent, England.
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R. Patel
R. Patel
2Kerjaya Balfour Beatty Cementation Sdn. Bhd. Pergau Site, Malaysia.
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Author and Other Information
P M Varley
1Knight Piesold Limited, Ashford, Kent, England.
R J H. Parkin
1Knight Piesold Limited, Ashford, Kent, England.
R. Patel
2Kerjaya Balfour Beatty Cementation Sdn. Bhd. Pergau Site, Malaysia.
Doi:
https://doi.org/10.1680/gaaas.26070.0016
  • Published:
    1997

Two large fissures were intersected in the down stream wall of the 30 m span power cavern at the Pergau Hydroelectric Project in Malaysia. These fissures dipped towards the cavern and were aligned at a low angle to it, such that a large wedge of rock was formed in the pillar between the main powerhouse cavern and the adjacent tailrace manifold tunnel.

This paper describes the design and installation of the 82 number, 225 tonne working load tendon ties, which were installed between the sidewall of the cavern and a purpose built installation gallery as each stage of the cavern was excavated.

  • 1.0 INTRODUCTION.

  • 2.0 GEOLOGY OF THE SITE

  • 3.0 NUMERICAL ANALYSES OF THE UNDERGROUND EXCAVATIONS

  • 4.0 ANALYSES OF THE WEDGE

  • 4.0 INSTALLATION OF THE TENDON TIES

  • 5.0 CONCLUSION

  • REFERENCES

  • ACKNOWLEDGEMENTS

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