Slide 1

POLITECNICO DI TORINO

Post Graduated Master Course
TUNNELLING AND TUNNEL BORING MACHINES
Subject of the lesson : Introduction and Main Concepts
Lecturer : René Raúl Ramírez Vázquez
Golden Sponsors

Sponsors

Academic Year: 2009-10


Slide 2

POLITECNICO DI TORINO

Presentation overview
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Brief Historical Perspective
Tunnelling Operation
Project Requirements
TBM Main Sections
Short Movie Bwari Project
Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 3

POLITECNICO DI TORINO

Brief Historical Perspective
2500 B.C.
First
Tunnel

1955
Pressure
Shields

1825
Shield
Tunnelling

1974
First EPB

1964
SLURRY

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 4

POLITECNICO DI TORINO

Tunnelling Operation
• Tunnel Excavation
• Spoil Removal
• Tunnel Lining

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 5

POLITECNICO DI TORINO

Tunnel Boring Machine Benefits
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High Production Rates
Alternative to “Traditional” Methods
High Quality
Surface Structures Minimal Impact
Increased Safety
Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 6

POLITECNICO DI TORINO

Less Favourable Position
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High up front cost
Difficult to Transport
High Learning Curve
Costly Project Modifications
Performance Risk
Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 7

POLITECNICO DI TORINO

Sorting TBMs by Ground Type
Hard Rock

Soft Ground

Hard to excavate

Easy to remove

Self support

Difficult support

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 8

POLITECNICO DI TORINO

Soft Ground Support
• Tunnel Face
• Shield Area
• Tail Void

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 9

POLITECNICO DI TORINO

Face Ground Support
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Mechanical
Compressed Air
Slurry
Earth Pressure Balance EPB
Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 10

POLITECNICO DI TORINO

SLURRY Principle

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 11

POLITECNICO DI TORINO

EPB Principle

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 12

POLITECNICO DI TORINO

EPB Without Additives

EPB With Additives
Slurry With Additives
Slurry Without Additives

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 13

POLITECNICO DI TORINO

Slurry and EPB Comparison
EPB

Slurry

Cuttinghead Power

High

Low

Site Power Requirement

Moderate

High

Use of Additives

Required

Required

Capital Cost

Low

High

Site size

Moderate

Large

Spoil Disposal

Easy

Complex

Speed of Excavation

Fast

Moderate

Cleanliness of Tunnel

Poor

Good

Criteria

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 14

POLITECNICO DI TORINO

Project Requirements Review
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Geology
Lining
Tunnel Alignment
Project Schedule
Site Requirements
Experience
Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 15

POLITECNICO DI TORINO

TBM – Main Sections

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 16

POLITECNICO DI TORINO

Cuttinghead

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 17

POLITECNICO DI TORINO

Main Drive

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 18

POLITECNICO DI TORINO

Forward Shield

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 19

POLITECNICO DI TORINO

Screw Conveyor

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 20

POLITECNICO DI TORINO

Air Lock

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 21

POLITECNICO DI TORINO

Active Articulation

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 22

POLITECNICO DI TORINO

Stationary Shield

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 23

POLITECNICO DI TORINO

Propulsion Thrust

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 24

POLITECNICO DI TORINO

Erector Rear Support

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 25

POLITECNICO DI TORINO

Erector

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 26

POLITECNICO DI TORINO

Trailing Shield

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 27

POLITECNICO DI TORINO

HS Front View

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 28

POLITECNICO DI TORINO

EPB Front View

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 29

POLITECNICO DI TORINO

HS Side View

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 30

POLITECNICO DI TORINO

EPB Side View

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 31

POLITECNICO DI TORINO

HS Rear View

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 32

POLITECNICO DI TORINO

EPB Rear View

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES


Slide 33

POLITECNICO DI TORINO

Academic Year: 2009-10
Post Graduate Master Course
TUNNELLING AND TUNNEL BORING MACHINES