Rock and soil slope protection using a high stiffness geocomposite mesh system
|
Authors: Cheer, D; Giacchetti, G |
DOI https://doi.org/10.36487/ACG_rep/1308_90_Cheer
Cite As:
Cheer, D & Giacchetti, G 2013, 'Rock and soil slope protection using a high stiffness geocomposite mesh system', in PM Dight (ed.), Slope Stability 2013: Proceedings of the 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering, Australian Centre for Geomechanics, Perth, pp. 1273-1284, https://doi.org/10.36487/ACG_rep/1308_90_Cheer
Abstract:
One of the most common solutions adopted for the protection of vulnerable soil and rock slopes is wire mesh, retained by a system of anchors and ropes. Different types of meshes are available from a number of manufacturers around the world. Hexagonal ‘Double Twist’ type meshes have been used very successfully in civil and geotechnical engineering projects for over 60 years but in the last 10 years many alternative meshes have been brought into the market place. This can sometimes leave designers and contractors struggling to choose the most suitable mesh for their project or having to install two different meshes together in order to take advantage of specific desirable benefits, unique to each. Recently a revolutionary geocomposite mesh Steelgrid HR, has been developed, which is able to offer a range of advantageous mechanical and practical benefits combined with the convenience of a single mesh. Steelgrid HR is supplied as a complete ‘mesh kit’ or ‘system’ with tried and tested installation fittings to enable the contractor, designer and client to benefit from the unique capabilities of the mesh while overcoming any conceptual ambiguity regarding system implementation. The system is available with two different corrosion protection specifications to suit a variety of different project sites from near marine environments to high alpine continental areas. Steelgrid HR has been subjected to rigorous testing conducted by a number of highly respected independent test institutions; including testing to the new UNI 11347 standard: Tests on Meshes for Slope Coverage. This testing has allowed the Steelgrid HR system to gain both the European Technical Approval (ETA) and the CE mark. The test data has been incorporated into the unique and recently revised MacRO software package that enables engineering professionals to calculate the performance of Steelgrid HR under a variety of slope stability conditions. This paper will review existing meshes and full scale testing performed to date, provide design and installation guidance, examine the tests performed on Steelgrid HR mesh and mesh kit components and will also look into the details of the revised limit states approach version of the MacRO software package.
References:
Arndt, B., Ortiz, T. and Turner, A.K. (2009) Colorado’s Full-Scale Field Testing of Rockfall Attenuator Systems, Transportation Research Circular E – C141. The Transport Research Board (TRB) of the National Academies, Washington, USA.
Badger, T.C. and Duffy, J.D. (2012) Rockfall Characterization and Control, The Transport Research Board of the National Academies, A.K. Turner and R.L Schuster (eds), The National Academy of Sciences, USA, Chapter 16, ‘Drapery Systems’ pp. 553–577.
Berends, J., Chaychuck, D. and Giacchetti, G. (2011) Techniques for reducing risk and increasing safety from rockfalls in open mines in Australia, in Proceedings 22nd World Mining Congress and Expo, Istanbul 2011, Vol. 1, pp. 563–569.
Bertolo, P., Oggeri, C. and Peila, D. (2009) Full-scale testing of draped nets for rock fall protection, Canadian Geotechnical Journal, Vol. 46, pp. 306–317.
Brunet, G. and Giacchetti, G. (2012) Design Software for secured drapery, in Proceedings Highway Geology Symposium, USA.
Brunet, G., Giacchetti, G., Bertolo, P. and Peila, D. (2009) Protection from High Energy Rockfall Impacts using Terramesh Embankments: Design and Experiences, in Proceedings 90th Highway Geology Symposium, September 2009.
BS 8006–2 (2011) Code of Practice for Reinforced Soils, Part 2, Soil Nail Design, viewed 16/08/2013, .
Cantareli, G., Giani, G., Gottardi, G. and Govoni, L. (2008) Modeling Rockfall Protection Fences, Nota Tecnica, Vol. 222, Distart, Universita Degli Studi Di Bologna.
Giacchetti, G., Morandi, S. and Granito, A. (2005) Contributo della modellazione numerica nella progetta-zione della messa in sicurezza di una grande frana in roc-cia: il caso scascoli (bo) (The contribution of numerical modelling in the design of securing systems for a large rock slope failure in the case of Scascoli, Bologna).
Giacchetti, G. and Bertolo, P. (2010) Approccio al calcolo dei sistemi di reti con chiodi per il consolidamento delle pareti rocciose, Geoingegneria Ambientale e Mineraria (Calculation approach for mesh and anchor networks/systems for consolidation of rock slopes), Vol. XLVII (1), pp. 33–34.
Giacchetti, G., Grimod, A. and Cheer, D. (2011) Soil Nailing with flexible structural facing: design and experiences, in Proceedings Second World Landslide Forum, 3–7 October 2011, Rome, Italy.
Giacchetti, G. and Zotti, I.M. (2012) Design approach for rockfall barriers, in Proceedings XI CONGEO, Congreso Nacional de Geotecnia, Costa Rica, 9–10 August 2012.
Giacchetti, G. and Grimod, A. (2013) Design of simple drapery systems to guide rock falls along the slope, submitted to Eurock2013, www.eurock2013pwr.wroc.pl.
Grimod, A. and Giacchetti, G. (2012) New design software for rockfall simple drapery systems, in Proceedings World Mining Congress, Istanbul.
Gottardi, G. and Govoni, L. (2009) Full-scale Modelling of Falling Rock Protection Barriers, Rock Mechanics and Rock Engineering, 15 April 2009.
Higgins, J.D. and Andrew, R.D. (2012) Rockfall Characterization and Control, A.K. Turner and R.L Schuster (eds), The Transport Research Board of the National Academies, The National Academy of Sciences, USA, Chapter 2, ‘Rockfall Types and Causes’, pp. 20–55.
Hoek, E. (2000) Practical rock engineering (course notes), viewed 15 July 2013, www.rocscience.com/hoek/practical
RockEngineering.asp.
Muhunthan, B., Shu, S., Sasiharan, N., Hattamleh, O.A., Badger, T.C., Lowell, S.M. and Duffy, J.D. (2005) Analysis and design of wire mesh cable net slope protection – Final research report, Washington State Transportation Commission – U.S. Department of Transportation – Federal Highway Administration.
Pierson, L.A. (2012) Rockfall Characterization and Control, A.K. Turner and R.L. Schuster (eds), The Transport Research Board of the National Academies, The National Academy of Sciences, USA, Chapter 3, ‘Rockfall Hazard Rating Systems’, pp. 56–71.
Pierson, L.A. and Vierling, M.P. (2012) Rockfall Characterization and Control, A.K. Turner and R.L Schuster (eds), The Transport Research Board of the National Academies, The National Academy of Sciences, USA, Chapter 1, ‘Mitigation Selection’, pp. 3–19.
Ronco, C., Oggeri, C. and Peila, D. (2009) Design of reinforced ground embankments used for rockfall protection, Natural Hazards and Earth Sciences, Vol. 9, pp. 1189–1199.
Sasiharan, N., Muhunthan, B., Badger, T.C., Shu, S. and Carradine, D.M. (2006) Numerical analysis of the performance of wire mesh and cable net rockfall protection systems, Engineering Geology, Vol. 88, pp. 121–132.
Simons, M.J., Pollak, S. and Peirone, B. (2010) Design and construction of a high energy rockfall embankment on the Trans-Canada Highway, in Proceedings of GEO2010, Calgary, Alberta.
UNI EN 11211–4 (2012) Rockfall protective measures: definitive and executive design,
UNI 11437 (2012) Opere di difesa dalla caduta massi – Prove su reti per rivestimento di Versanti,
© Copyright 2024, Australian Centre for Geomechanics (ACG), The University of Western Australia. All rights reserved.
View copyright/legal information
Please direct any queries or error reports to repository-acg@uwa.edu.au
View copyright/legal information
Please direct any queries or error reports to repository-acg@uwa.edu.au