Bolting i berg (Lillehammer, 07.

Product Presentation
Rock Reinforcement Systems
Local Presence - Global Competence
Wolfgang Dolsak, M.Sc.
Business Line Manager Rock Reinforcement
wolfgang.dolsak@alwag.com
Contents
ƒ Introduction
ƒ General Information
ƒ State-of-the-art Ground Control Practices in
Underground Construction
ƒ Rock Support
ƒ Pre-Support
ƒ Rock Reinforcement
ƒ Anchors and Rock Bolts
ƒ Discussion
Bolting i berg (Lillehammer, 07.-09.10.2008)
Introduction
ƒ ALWAG Tunnelausbau Gesellschaft m.b.H.
ƒ Member of DYWIDAG-Systems International
Bolting i berg (Lillehammer, 07.-09.10.2008)
Introduction
ƒ DSI‘s Fields of Activity
ƒ Construction
ƒ Post-Tensioning
ƒ Geotechnics
ƒ Concrete Accessories
ƒ Underground
ƒ Mining
ƒ Tunneling
Bolting i berg (Lillehammer, 07.-09.10.2008)
Introduction
ƒ ALWAG
ƒ Headquarters Tunneling
ƒ Africa / Asia-Pacific / Europe
ƒ Mining Africa / Europe
North America
www.americancommercial.com
Headquarters
www.alwag.com
South America
www.soprofint.cl
Asia-Pacific
www.dsiminingproducts.com/au
Bolting i berg (Lillehammer, 07.-09.10.2008)
General Information
ƒ DSI Worldwide Solutions
ƒ Ground Support for Mining and Tunneling
ƒ Advanced Self-drilling Rock Reinforcement and
Ground Control Systems
ƒ Wide Choice Product Line - “One-Stop-Shop“
Bolting i berg (Lillehammer, 07.-09.10.2008)
Principles of Tunneling
Conventional Tunneling
Drill and Blast - “D&B“
Bolting i berg (Lillehammer, 07.-09.10.2008)
Mechanized Tunneling
Tunnel Boring Machines - “TBM“
Ground Control Procedures
ƒ Rock Reinforcement
ƒ Systematic Anchoring and
Rock Bolting
Bolting i berg (Lillehammer, 07.-09.10.2008)
Ground Control Procedures
ƒ Rock Reinforcement
ƒ Systematic Anchoring and
Rock Bolting
ƒ Face Anchoring and Bolting
Bolting i berg (Lillehammer, 07.-09.10.2008)
Ground Control Procedures
ƒ Rock Reinforcement
ƒ Systematic Anchoring and
Rock Bolting
ƒ Face Anchoring and Bolting
ƒ Micropiles
Bolting i berg (Lillehammer, 07.-09.10.2008)
Ground Control Procedures
ƒ Pre-support
ƒ Definition
ƒ Ground Stabilization and improvement before
excavation
Bolting i berg (Lillehammer, 07.-09.10.2008)
Ground Control Procedures
ƒ Pre-support
ƒ Definition
ƒ Ground Stabilization and improvement before
excavation
ƒ Large-scale
ƒ Pipe Umbrella Support System
ƒ Jet-grouting
Bolting i berg (Lillehammer, 07.-09.10.2008)
Ground Control Procedures
ƒ Small-scale
ƒ Conventional Forepoling
(e.g. Lagging Sheets)
ƒ Spiles
Bolting i berg (Lillehammer, 07.-09.10.2008)
Ground Control Procedures
ƒ Pre-support
ƒ Requirements
ƒ Stiff support elements to avoid progressive
ground destabilization
Bolting i berg (Lillehammer, 07.-09.10.2008)
Ground Control Procedures
ƒ Rock Support
ƒ Steel arches and lattice girders
ƒ Yielding Support Elements
ƒ Chain-linked wire mesh and welded wire mesh
Bolting i berg (Lillehammer, 07.-09.10.2008)
Ground Control Procedures
ƒ Rock Support
ƒ
ƒ
ƒ
ƒ
Steel arches and lattice girders
Yielding Support Elements
Chain-linked wire mesh and welded wire mesh
Shotcrete
ƒ US: Rib and Board Tunneling
ƒ Steel ribs
ƒ Steel or wood lagging
Bolting i berg (Lillehammer, 07.-09.10.2008)
Product Range
Anchors & Rock Bolts
Spiles
Rock Support
AT - Casing System
Injection Equipment
Rock Driling Tools
Drilling Machines
Service & Engineering
Bolting i berg (Lillehammer, 07.-09.10.2008)
Anchors and Rock Bolts
ƒ Rebar Rock Bolts
ƒ Fully cement grouted dowels
ƒ Steel grades
ƒ Reinforcement Steel (BSt 550 or Bst 500 S)
ƒ Rock Bolt Steel (Fa 650/850 or St. 650/820)
ƒ Special rib geometry
ƒ Underground Mining and Tunneling
Bolting i berg (Lillehammer, 07.-09.10.2008)
Anchors and Rock Bolts
ƒ Special rib geometry - pull tests after 12 hrs
ƒ Rebar rock bolts Ø 25 mm, bond length 500 mm
Load [kN]
ƒ Orange: standard rebar
ƒ Blue: special rib geometry (ALWAGRIP)
Displacement [mm]
Bolting i berg (Lillehammer, 07.-09.10.2008)
Anchors and Rock Bolts
ƒ THREADBAR Anchors and Rock Bolts
ƒ GRP Bolts plus Accessories
ƒ Solid or hollow bar version
ƒ Expansion Anchors
ƒ Mechanical Anchors
ƒ Expansion Shells B38 / B43
Anchor
Yield
Bar
Thread Strength
Diameter
Rp0,2
Tensile
strength
Rm
Max.
tensile
load
Fm
[mm]
[--]
[N/mm²]
[N/mm²]
[kN]
16
M 18
260
670-830
140
Bolting i berg (Lillehammer, 07.-09.10.2008)
Anchors and Rock Bolts
ƒ Combination Bolts
ƒ Mechanical / Fully Grouted
ƒ Self-drilling Hollow Bar Bolts
ƒ Expandable Friction Bolts
ƒ Friction Stabilizers
ƒ „Split-Sets“
Bolting i berg (Lillehammer, 07.-09.10.2008)
Anchors and Rock Bolts
ƒ Self-drilling Friction Bolts
ƒ AT - POWER SET
ƒ Simultaneous drilling and
bolt installation
ƒ Accessories
ƒ Anchor Plates
ƒ Resin Cartridges
ƒ Rock Drilling Equipment
ƒ Injection Equipment
ƒ Mortar Mixing Pumps
Bolting i berg (Lillehammer, 07.-09.10.2008)
Thank you for your Attention!
Local Presence - Global Competence
Wolfgang Dolsak, M.Sc.
Business Line Manager Rock Reinforcement
wolfgang.dolsak@alwag.com