Introduction to English Version

Foreword

1 General Provisions

2 Terms and Symbols

2．1 Terms

2．2 Symbols

3 Basic Data

4 Layout of Tunnels

4．1 Selection of Tunnel Alignment

4．2 I，ayout of Tunnel Inlets and Outlets

4．3 Layout of Multipurpose Tunnels

5 Pressure Status， Shape and Size of Tunnels

5．1 Selection of Pressure Status

5．2 Cross-Sectional Shape

5．3 Cross-Sectional Size

6 Hydraulic Design of Tunnels

6．1 Principle of Calculation

6．2 Cavitation Damage Prevention Design of High- Velocity Tunnels

7 Design of Soil Tunnels

7．1 Supports and I_inings of Soil Tunnels

7．2 Joints， Seepage Control and Waterstops for the Linings of Soil Tunnels

8 Design of Tunnels in Poor Ground

9 Tunnel Supports and Linings

9．1 General

9．2 Loads and Load Combinations

9．3 Unreinforced- and Reinforced-Concrete Linings

9．4 Prestressed Concrete Linings

9．5 Unlined and Bolt-Shotcrete Lined Tunnels

9．6 Design of Reinforced Concrete Lined Bifurcation

9．7 Jointsin Linings

9．8 Design of Water-Retaining Plugs

10 Grouting， Seepage Control and Drainage of Tunnels

10．1 Grouting

10．2 Seepage Control and Drainage

11 Tunnel Operation and Maintenance

Annex A Head Loss Calculation for Hydraulic Tunnels

A．1 Friction Losses

A．2 Form Losses

Annex B Cavitation Damage Prevention Design of High-Velocity Tunnels

Annex C Calculation Method and Reduction Coefficient of External Water Pressure

Annex D Calculation of Concrete Lining Crack Width

Explanation of Wording