Hardrock Tunnel Boring Machines

This book covers the fundamentals of tunneling machine technology: drilling, tunneling, waste removal and securing. It treats methods of rock classification for the machinery concerned as well as legal issues, using numerous example projects to reflect the state of technology, as well as problematic cases and solutions. The work is structured such that readers are led from the basics via the main functional elements of tunneling machinery to the different types of machine, together with their areas of application and equipment. The result is an overview of current developments.
Close cooperation among the authors involved has created a book of equal interest to both experienced tunnelers and newcomers.

About the authors:

The four authors work in various areas of tunneling.
Bernhard Maidl has been Professor for Civil Engineering, Tunneling and Construction at the Ruhr-Universit�t in Bochum since 1974. In 1979 he founded the engineering firm Maidl und Maidl in Bochum, which is involved in many large and complex tunnel projects in Germany and abroad.
Dr. Herrenknecht is the Founder and Chairman of the world's leading mechanized shield tunneling company.
Leonhard Schmid is a planner of tunneling projects and manager of a Swiss engineering firm.
Willy Ritz was formerly manager of a tunneling company in Switzerland and has a great deal of experience in the construction sector.

1. Historical Development and Future Challenges.
2. Basic Principles and Definitions.
2.1 Basic Principles and Construction.
2.2 Definitions and Terms.
3. Boring Operation.
3.1 The Boring Process.
3.2 The Cutter Head.
3.3 Cutting Tools.
3.4 The Main Drive.
3.5 Advance Rate.
3.6 Special Types.
4. Thrust.
4.1 General.
4.2 Advance with Gripper Clamping.
4.3 Advance with a Shield TBM.
5. Material Transport.
5.1 Material Transport at the Machine.
5.2 Material Transport Through the Tunnel.
6. Backup Equipment.
6.1 Backup Concept.
6.2 Design Specifications.
7. Ventilation, Dust Removal, Working Safety, Vibration.
7.1 Ventilation.
7.2 Dust Removal.
7.3 Occupational Safety and Safety Planning for TBM Operation.
7.4 Vibration.
8. Additional Equipment.
8.1 Investigation and Improvement of the Geological Conditions.
8.2 Equipment for Rock Support.
8.3 TBM Steering.
8.4 Surveying.
9. Tunnel Support.
9.1 General.
9.2 Support System and Advance Rates.
9.3 Systematic Support at the Machine.
9.4 Shotcrete Support.
9.5 Localised Support.
9.6 Stabilisation Ahead of the Cutter Head.
10. Gripper TBM and Shield Machine Combinations.
10.1 Roof Shields.
10.2 Roof Shield and Side Steering Shoes and Cutter Head Shields.
10.3 Walking Blade Gripper TBM.
10.4 Full-Face Shield Machines.
10.5 Double Shields.
10.6 Slurry Shield Machines.
10.7 Shields with Screw Conveyors.
10.8 Micro Machines for hard Rock.
11. Special Processes: Combinations of TBM Drives with Shotcrete.
11.1 Scope of Application.
11.2 Constructing Options.
11.3 Examples.
12. Geological Investigations and Influences.
12.1 General.
12.2 Influences on the Boring Process.
12.3 Influences on the Machine Clamping.
12.4 Influences on the Rock Support.
13. Classification for Excavation and Support.
13.1 General and Objectives for Mechanical Tunnelling.
13.2 Calssification Systems.
13.3 Standards, Guidelines and Recommendations for the Classification of Mechanised Tunnelling.
13.4 Classification Suggestion by the Authors.
14. Tendering, Award, Contract.
14.1 Procedure Examples.
14.2 Procedure in the Netherlands.
15. Tunnel Lining.
15.1 General.
15.2 Design Principles for Tunnel Linings.
15.3 Lining with Concrete Segments.
15.4 Cast in-situ Linings.
15.5 Shotcrete Layers as the Final Lining.
15.6 Structural Investigations.
16. Examples of Completed Tunnels.
16.1 Tunnel Excavation with Gripper TBMs.
16.2 Tunnelling with Shield TBMs.
16.3 Inclined Shaft Tunnelling with Double Shield.
References.
Index.