Faculty of Science Commonwealth of Australia Copyright Act 1968 Notice for paragraph 135ZXA (a) of the Copyright Act 1968 Warning This Material has been reproduced and communicated to you by or on behalf of Federation University Australia under Part VB of the Copyright Act 1968 (the Act). The Material in this communication may be subject to copyright under the Act. Any further reproduction or communication of this material by you may be the subject of copyright protection under the Act. Do not remove this notice. Rock Mechanics 101 and the possible use for textiles M Tuck Federation University Australia
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Faculty of Science
Commonwealth of Australia Copyright Act 1968
Notice for paragraph 135ZXA (a) of the Copyright Act 1968
Warning
This Material has been reproduced and communicated to you by or on behalf of Federation University Australiaunder Part VB of the Copyright Act 1968 (the Act).
The Material in this communication may be subject to copyright under the Act. Any further reproduction orcommunication of this material by you may be the subject of copyright protection under the Act.
Do not remove this notice.
Rock Mechanics 101 and the possibleuse for textiles
M TuckFederation University Australia
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Faculty of Science
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Faculty of Science
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Faculty of Science
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Faculty of Science
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Faculty of Science
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Faculty of Science
Figure 23: Wedge sliding along two intersecting discontinuities in a sidewall
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Faculty of Science
Processing and analysis of data
Ground Control methods can be considered to comprise of:
Ground support or elements that support the perimeter of the excavationGround reinforcement or elements that act within the rock mass oftenproviding an active restraining force.
Support and reinforcement can also comprise any measure that maintainsthe integrity of a mine opening for the required time period, i.e. fromminutes to years. Reinforcement can also be subdivided further into:
Passive; in which the rock mass has to move in order that the reinforcingelement can develop its required load, such as timber sets.Active; where the reinforcing element places an active load on the rockmass from the time of installation such as a tensioned rock bolt
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Faculty of Science
Mechanics Example Character/ApplicationFriction Split sets
SwellexGood in mobile groundPoor in hard rock and seismicconditions
End Anchor Shell anchorResin anchor
Good in hard rock as atemporary support
Full column grouting/resin BarsWire cables
Stiff permanent support at allstress levels except whereseismicity occurs
High stress (squeezingground)
Shotcrete/fibrecrete mesh,bolts or concrete segments
Both must be deformableVery early application
High stress (high modulusground)
Shocrete/fibrecrete cables(wire)
Stiff unless seismically active.Very early application
Seismicity Shotcrete/ fibrecreteMesh/lacingBolts/ cables (rope)
Bolts/ cables must bedeformable (full column groutand sheath)
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So What about textiles?
Rock Mechanics 101 and the possible use for textiles M Tuck Federation University AustraliaSlide2Slide3Slide8Slide9Slide4Slide10Slide5Slide7Slide11Slide12Slide13Slide14Slide6Slide15Slide16Slide17Slide18
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