8/12/2019 Hans Greve_Aker Wirth
1/19
part of Aker
2009 Aker Solutions
Innovative Tunneling Methods forUnderground Mining
Hans Greve EVP Mining & Construction
Aker Wirth GmbH
8/12/2019 Hans Greve_Aker Wirth
2/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 2
Contents
Introduction
Overview of technologies
Mechanised excavation methods in block caving
Mobile Tunnel Miner
Discussion
8/12/2019 Hans Greve_Aker Wirth
3/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 3
Introduction
Hard Rock Tunneling
Applications
Infrastructure
Mine development
Products
Tunnel boring machines
Roadheaders
Microtunneling machines
Mining
Applications
Mine development
Production technology
Products
Roadheaders
Continuous Miners
Shaft and raiseboringmachines
Foundation Drilling
Applications
Foundation drilling
Diamond drill ships
Products Pile top drill rigs
Universal drill rigs
Drill ship equipment
Aker Wirth was founded in 1895 and since 2009 part of Aker Solutions
8/12/2019 Hans Greve_Aker Wirth
4/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 4
Overview of Excavation Technologies
Drill & Blast
Proven technology
Limited in advance rate (100-150m/month)
Low investment capital equipment
High operating costs
More overbreak and additionalsupport
Use of explosives
Safety
8/12/2019 Hans Greve_Aker Wirth
5/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 5
Mechanised Excavation Methods
Continuous Miner
Room & Pillar Mining
Roadway Development
Coal, Salt Mines
Roadheaders
NATM Tunneling projects
Roadway Development
Coal, Salt, Copper Mines
Tunneling projects
Hard Rock TBM
Tunneling projects
Infrastructure for various
purposes e.g. water, traffic, HEP
Mobile Tunnel Miner
Undercutting technology
Infrastructure for hard rock
mining
8/12/2019 Hans Greve_Aker Wirth
6/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 6
Application of equipment
Rock strength, UCS
8/12/2019 Hans Greve_Aker Wirth
7/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 7
Typical Underground Mining Layout
8/12/2019 Hans Greve_Aker Wirth
8/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 8
Typical Underground Mining Layout
Shaftboring
Blind hole drillingRaiseboring
8/12/2019 Hans Greve_Aker Wirth
9/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 9
Typical Underground Mining Layout
Main Infrastructure
Access and infrastructure
tunnels area 20-30 m
Supported with bolting &
shotcrete (50-100 mm)
Mobile and short turning
radius
8/12/2019 Hans Greve_Aker Wirth
10/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 10
Mobile Tunnel Miner 6 arm
Exclusive development of the MTM6 as Tunnel Boring System for
Rio Tinto project the Mine of the Future Capable to excavate up to 6 m in diameter, but different tunnel
shapes
Fast and cost effective tunneling methods (> 10 m/day)
Fully self-supporting in excavation, lining support and logistics
L1
L2
Excavation Tunnel supportMaterial handling and logistics
8/12/2019 Hans Greve_Aker Wirth
11/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 11
Typical Underground Mining Layout
Development & Haulage tunnels
(footprint) Development and haulage tunnels
area 15-20 m
Roof supported with bolting &
shotcrete (?)
Mobile, reversible and short turning
radius High advance rate
8/12/2019 Hans Greve_Aker Wirth
12/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 12
MTM4 main characteristics
Cutting
arms
Gripping mechanism
Bolting & optional shotcreting
Roof support
Loading discs Dust collection pipe
Stepping mechanism
during cutting process
Crawler for tramming
Gripping mechanism
Reels for cable
water, air
Conveyor
for muck cars
Conveyor
throat
Control cabin
The design of the MTM is robust and uses a combination of proven technologies
The system provides a safe working place, with protective areas for operators and
a high quality of dust control.
8/12/2019 Hans Greve_Aker Wirth
13/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 13
MTM4 Cutting profile with undercutting technology
Cutting area of theinner arm
Cutting area of theouter arms
The Aker Wirth MTM is capable to produce different tunnel cross-sections,
using one and the same machine, from rectangular, to horseshoe and
circular shape.
8/12/2019 Hans Greve_Aker Wirth
14/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 14
MTM4 Manoeuvrability
Due to its own crawler drive, the system has a relatively highmaneuverability and flexibility to travel underground from one face to
another. 25 m turning radius, with articulated machine design
Independent forward and reverse movement on crawler tracks
Cable reels for power cables, water hoses
8/12/2019 Hans Greve_Aker Wirth
15/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 15
Mining sequence footprint design
Support functions:
Deduster
Transformer
Secondary roof support
Muck transport
MTM
Ventilation
Flexibel connection
Power cable
WaterAir suction line
The MTM is capable of achieving advance rates of 12 m/day in
varying rock classifications.
There is no limit in rock strength for the application of the MTM
system. The advance rates and wear costs remain economically
acceptable in high strength rock (> 200 MPa UCS).
8/12/2019 Hans Greve_Aker Wirth
16/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 16
Mine design and planning
Challenges for mine design and planning
How to use the advantages of:
Safer excavation method - roof & rib support
Faster excavation method - development stages
25 m excavation radius - footprint layout
Utilize new technolgies such as the Mobile Tunnel
Miner to achieve a faster and more cost effective minedevelopment
8/12/2019 Hans Greve_Aker Wirth
17/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 17
Thank you for your attention
Creighton Norite 260 MPa
8/12/2019 Hans Greve_Aker Wirth
18/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 18
Copyright
Copyright of all published material including photographs, drawings and images in this documentremains vested in Aker Solutions and third party contributors as appropriate. Accordingly, neither thewhole nor any part of this document shall be reproduced in any form nor used in any manner withoutexpress prior permission and applicable acknowledgements. No trademark, copyright or other noticeshall be altered or removed from any reproduction.
8/12/2019 Hans Greve_Aker Wirth
19/19
2009 Aker Solutions part of Aker
Workshop Expomin April 2010
Slide 19
Disclaimer
This Presentation includes and is based, inter alia, on forward-looking information and statements thatare subject to risks and uncertainties that could cause actual results to differ. These statements andthis Presentation are based on current expectations, estimates and projections about global economicconditions, the economic conditions of the regions and industries that are major markets for AkerSolutions ASA and Aker Solutions ASAs (including subsidiaries and affiliates) lines of business.These expectations, estimates and projections are generally identifiable by statements containingwords such as expects, believes, estimates or similar expressions. Important factors that couldcause actual results to differ materially from those expectations include, among others, economic and
market conditions in the geographic areas and industries that are or will be major markets for AkerSolutions businesses, oil prices, market acceptance of new products and services, changes ingovernmental regulations, interest rates, fluctuations in currency exchange rates and such otherfactors as may be discussed from time to time in the Presentation. Although Aker Solutions ASAbelieves that its expectations and the Presentation are based upon reasonable assumptions, it cangive no assurance that those expectations will be achieved or that the actual results will be as set outin the Presentation. Aker Solutions ASA is making no representation or warranty, expressed orimplied, as to the accuracy, reliability or completeness of the Presentation, and neither Aker Solutions
ASA nor any of its directors, officers or employees will have any liability to you or any other personsresulting from your use.
Aker Solutions consists of many legally independent entities, constituting their own separate identities.Aker Solutions is used as the common brand or trade mark for most of these entities. In thispresentation we may sometimes use Aker Solutions, we or us when we refer to Aker Solutionscompanies in general or where no useful purpose is served by identifying any particular Aker Solutionscompany.