Foreword Explanatory Notes to the Wording of This Specification 1 Scope 2 Normative References 3 General 4 Terminology 5 Basic Data 6 Arrangement of Tunnel 7 Shape and Dimensions of Tunnel Section 8 Hydraulic Design 9 Basic Principles for Structural Design 10 Unlined and Bolt-Shotcrete Tunnels 11 Concrete and Reinforced Concrete Lining 12 Prestressed Concrete Lining 13 High-Pressure Branch Tunnels with Reinforced Concrete Lining 14 Design of Plugs 15 Grouting, Seepage Control and Water Drainage 16 Monitoring, Operation and Maintenance Annex A (Normative) Engineering Geology Classification of Surrounding Rock Annex B (Normative) Materials Annex C (Informative) Head Loss Calculation for Hydraulic Tunnels Annex D (Normative) Anti-Cavitation Design of High Velocity Hydraulic Tunnels Annex E (Normative) Structure Safety Class of Hydraulic Tunnels Annex F (Informative) Type and parameter of bolt-shotcrete support Annex G (Normative) Calculation of Circular Pressure Tunnel Lining Annex H (Informative) Reduction coefficient of external water pressure Annex I (Normative) Lining Calculation for Circular Non-pressure Tunnels and Non-circular Tunnels Annex J (Informative) Cracking of Concrete Lining and Its Preventive Measures
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