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Investigation on the Rock Surface Support Performance of Welded Steel Mesh and Thin Spray-On Liners Using Full-Scale Laboratory Testing

  • Zhenjun ShanEmail author
  • Ian Porter
  • Jan Nemcik
  • Ernest Baafi
  • Zhenyu Zhang
Technical Note
  • 97 Downloads

Introduction

The mesh is a traditional rock surface support component that together with rock bolts and cable bolts have been successfully used in underground coal mines for many years to help control roof and rib deformation (Nemcik et al. 2009). An innovative surface support medium, a thin spray-on liner (TSL), was first proposed in the late 1980s (Potvin et al. 2004) as another potential rock skin support. Since then many TSL products have been developed and used with various degrees of success. As part of the ACARP (Australian Coal Association Research Program) project, this research work has been carried out to compare the newly developed TSL with the currently used welded steel mesh.

Previous research reveals that there is significant difference between steel mesh and TSL skin support methods. While in most cases roof mesh provides basic support of detached fractured strata, TSL has the additional capability to form a strong composite layer when bonded to the substrate, assisting...

Keywords

Welded steel mesh Thin spray-on liners TSL-concrete composite Full-scale laboratory test 

List of Symbols

FRP

Fibre-reinforced polymer

TSLs

Thin spray-on liners

TSL

Thin spray-on liner

ACARP

Australian Coal Association Research Program

LVDT

Linear variable differential transducer

ko

Stiffness

lm

Maximum load

dm

Displacement at maximum load

E

Absorbed energy

f(s)

The load

ds

A small displacement increment

Notes

References

  1. Connor CP, Brummer RK, Swan G, Doyle (2003) FLAC numerical simulations of the behavior of a spray-on liner for rock support. In: Proceedings of the 3rd international FLAC symposium, Sudbury, Ontario, Canada, October 2003, pp 295–299Google Scholar
  2. Dolinar DR (2006) Load capacity and stiffness characteristics of screen materials used for surface control in underground coal mines. In: Proceedings of 25th international conference on ground control in mining, Morgantown, WV, pp 152–158Google Scholar
  3. Dolinar DR (2009) Performance characteristics for welded wire screen used for surface control in underground coal mines. In: Proceedings of society for mining, metallurgy and exploration; SME annual meeting & exhibit, and CMA's 111th National Western Mining Conference, Denver, Colorado, pp 659–666Google Scholar
  4. Finn DJ (2004) Thin spray-on liner tests. In: Potvin Y, Stacey TR, Hadjigeorgiou J (eds) Surface support in mining. Australian Centre for Geomechanics, Nedlands, pp 89–95Google Scholar
  5. Gadde MM, Rusnak JA, Honse JW (2006) Behavior of welded wire mesh used for skin control in underground coal mines. In: Proceedings of 25th international conference on ground control in mining, Morgantown, WV, pp 142–151Google Scholar
  6. Hadjigeorgiou J, Potvin Y (2011) A critical assessment of dynamic rock reinforcement and support testing facilities. Rock Mech Rock Eng 44:565–578CrossRefGoogle Scholar
  7. Hepworth N, Lobato J (2002) Minova resin spray field trials-Neves Corvo mine, Portugal. In: Potvin Y, Stacey TR, Hadjigeorgiou J (eds) Surface support in mining. Australian Centre for Geomechanics, Nedlands, pp 239–242Google Scholar
  8. Kuijpers JS (2004) Evaluation of thin spray-on liners support behaviour. In: Potvin Y, Stacey TR, Hadjigeorgiou J (eds) Surface support in mining. Australian Centre for Geomechanics, Nedlands, pp 103–112Google Scholar
  9. Morton E, Thompson A, Villaescusa E, Roth A (2007) Testing and analysis of steel wire mesh for mining applications of rock surface support. In: Ribeiro e Sousa, Olalla and Grossman (Eds) 11th congress of the international society for rock mechanics, vol 2, July, pp 1061–1064Google Scholar
  10. Nemcik J, Porter I, Baafi E, Lukey C (2009) Geotechnical assessment of skin reinforcement in underground mines. In: Proceedings of 28th international conference on ground control in mining, Morgantown, West Virginia, pp 256–260Google Scholar
  11. Nemcik J, Porter I, Baafi E, Navin J (2011a) Determining the ultimate strength of ˜tough skin' a glass fibre reinforced polymer liner. In: Proceedings of the coal 2011 11th underground coal operator's conference, University of Wollongong, pp 154–158Google Scholar
  12. Nemcik J, Porter I, Baafi E, Towns J (2011b) Bearing capacity of a glass fibre reinforced polymer liner. In: Proceedings of the coal 2011 11th underground coal operator's conference, University of Wollongong, pp 148–153Google Scholar
  13. Ortlepp WD, Stacey TR (1997) Testing of tunnel support: dynamic load testing of rock support containment systems. SIMRAC GAP Project 221Google Scholar
  14. Player JR, Morton E, Thompson AG, Villaescusa E (2008) Static and dynamic testing of steel wire mesh for mining applications of rock surface support. Ground Support in Mining and Underground Construction, Cape TownGoogle Scholar
  15. Potvin Y, Giles G (2008) The development of new high-energy absorption mesh. In: Proceedings tenth AusIMM underground operators' conference, The Australasian Institute of Mining and Metallurgy, Melbourne, pp 89–94Google Scholar
  16. Potvin Y, Stacey TR, Hadjigeorgiou J (2004) Surface support in mining. Australian Centre for Geomechanics, NedlandsGoogle Scholar
  17. Shan Z (2017) Geotechnical assessment of thin spray-on liners for underground coal mine roof support, Ph.D. thesis, University of Wollongong, AustraliaGoogle Scholar
  18. Shan Z, Porter I, Nemcik J (2014) Performance of full scale welded steel mesh for surface control in underground coal mines. In: Morsi BI (Ed) 31st Annual International Pittsburgh Coal Conference: coal—energy, environment and sustainable development, PCC 2014, pp 1–10Google Scholar
  19. Stacey TR (2001) Review of membrane support mechanisms, loading mechanisms, desired membrane performance, and appropriate test methods. J S Afr Inst Min Metall 101(7):343–352Google Scholar
  20. Swan G, Henderson A (2004) Water-based spray-on liner implementation at Falconbridge Limited. In: Potvin Y, Stacey TR, Hadjigeorgiou J (eds) Surface support in mining. Australian Centre for Geomechanics, Nedlands, pp 215–219Google Scholar
  21. Tannant DD (1995) Load capacity and stiffness of welded-wire mesh. In: Proceedings of 48th Canadian geotechnical conference, Vancouver, pp 729–736Google Scholar
  22. Tannant DD (2004a) Thin spray-on liners for underground rock support testing and design issues. In: Potvin Y, Stacey TR, Hadjigeorgiou J (eds) Surface support in mining. Australian Centre for Geomechanics, Nedlands, pp 51–59Google Scholar
  23. Tannant DD (2004b) Load capacity and stiffness of welded wire, chain link, and expanded metal mesh. In: Potvin Y, Stacey TR, Hadjigeorgiou J (eds) Surface support in mining. Australian Centre for Geomechanics, Nedlands, pp 399–402Google Scholar
  24. Thompson AG (2004) Rock support action of mesh quantified by testing and analysis. In: Potvin Y, Stacey TR, Hadjigeorgiou J (eds) Surface support in mining. Australian Centre for Geomechanics, Nedlands, pp 391–398Google Scholar
  25. Villaescusa E (2004) Weld mesh for static rock support in Australia. In: Potvin Y, Stacey TR, Hadjigeorgiou J (eds) Surface support in mining. Australian Centre for Geomechanics, Nedlands, pp 385–390Google Scholar

Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Civil, Mining and Environmental Engineering, Faculty of Engineering and Information SciencesUniversity of WollongongWollongongAustralia
  2. 2.School of Civil, Mining and Environmental Engineering, Faculty of Engineering and Information SciencesUniversity of WollongongWollongongAustralia
  3. 3.School of Civil, Mining and Environmental Engineering, Faculty of Engineering and Information SciencesUniversity of WollongongWollongongAustralia
  4. 4.State Key Laboratory of Coal Mine Disaster Dynamics and ControlChongqing UniversityChongqingChina

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