C221-MMD-CV-REP-010-200019 |P02 | 06th May 2015 Euston Express - Petition Revision Date Issued for/Revision details Revised by P01 22/01/2015 Initial issue I Grace P02 06/05/2015 HS2 comments included I Grace Name Data MDL Ref B320 FOI / EIR HS2 to advise Document type Report Directorate London West Midlands WBS HS2 to advise Keywords Report, Template Authors ian.grace-mm Owner Mike Prosser Review Directorate HS2 to advise Employer’s Lead Reviewer HS2 to advise Authorised for use HS2 to advise INTERNAL London West Midlands Euston Express - Petition Contents Page number Executive summary ...................................................................................................... 1 1 Abbreviations and descriptions .............................................................................. 4 2 Introduction .......................................................................................................... 4 2.1 HS2 scheme ............................................................................................................. 4 2.2 Euston Tunnels ........................................................................................................ 4 2.3 Petition to the Hybrid Bill scheme .......................................................................... 5 3 Petition Proposals ................................................................................................. 5 4 Operational Review ............................................................................................... 8 4.1 Overview ................................................................................................................. 8 4.2 Queens Park to South Hampstead .......................................................................... 8 4.3 Primrose Hill and South Hampstead Tunnels ......................................................... 9 4.4 Camden Area........................................................................................................... 9 4.5 Euston Area ........................................................................................................... 10 4.6 Journey Time ......................................................................................................... 10 4.7 Conclusions ........................................................................................................... 11 5 Track Alignment Review ...................................................................................... 12 5.1 Overview ............................................................................................................... 12 5.2 Revised HS2 Tunnel Alignment ............................................................................. 12 5.3 Grade Separation between Watford DC Lines and new WCML Up Slow/Up Watford DC connection ................................................................................................... 12 5.4 WCML Fast Slews .................................................................................................. 14 5.5 GC Gauge Clearance .............................................................................................. 14 5.6 Conclusion ............................................................................................................. 14 6 Civil Engineering Review ...................................................................................... 16 6.1 Existing infrastructure ........................................................................................... 16 6.2 Key scheme requirements .................................................................................... 16 6.3 HS2 Portal ............................................................................................................. 19 Euston Express - Petition i Uncontrolled when printed C221-MMD-CV-REP-010-200019 Printed 7/5/2015 Revision - P02 Date approved – 06th May 2015 INTERNAL 6.4 Alternative HS2 Portal location............................................................................. 21 6.5 Grade separation / Dive Under structure ............................................................. 21 6.6 Primrose Hill Tunnel (Fast) .................................................................................... 25 6.7 Park Street Tunnels ............................................................................................... 33 6.8 South Hampstead Tunnels .................................................................................... 41 6.9 Other Structures ................................................................................................... 49 6.10 Adoption of GB gauge instead of GC gauge .......................................................... 55 7 Electrification and Signalling Discussion ............................................................... 56 7.1 Electrification Implication ..................................................................................... 56 7.2 Signalling Implications .......................................................................................... 60 8 Construction ........................................................................................................ 61 8.1 Introduction .......................................................................................................... 61 8.2 Overview phasing .................................................................................................. 61 8.3 Civil works construction ........................................................................................ 65 9 Rail Systems Construction .................................................................................... 92 9.1 Overview ............................................................................................................... 92 9.2 General Notes relating to the Rail Systems Construction Works ......................... 92 10 Environmental ................................................................................................. 94 10.1 Introduction .......................................................................................................... 94 10.2 HS2 Portal ............................................................................................................. 94 10.3 Alternative HS2 Portal location............................................................................. 95 10.4 Grade separation / Dive Under structure ............................................................. 96 10.5 Primrose Hill Tunnel (Fast) .................................................................................... 96 10.6 Park Street Tunnels ............................................................................................... 97 10.7 DC line Tunnels ..................................................................................................... 97 10.8 Other Structures ................................................................................................... 98 10.9 Operations ............................................................................................................ 98 10.10 Conclusion ......................................................................................................... 98 11 Programme ..................................................................................................... 100 12 Costs ............................................................................................................... 104 13 Comparison of the proposed scheme to Hybrid Bill .......................................... 105 14 Conclusions ..................................................................................................... 107 Appendix A................................................................................................................ 109 A.1 Petition Document .............................................................................................. 109 Appendix B ................................................................................................................ 111 Euston Express - Petition ii Uncontrolled when printed C221-MMD-CV-REP-010-200019 Printed 7/5/2015 Revision - P02 Date approved – 06th May 2015 INTERNAL B.1 Track Schematics ................................................................................................. 111 Appendix C ................................................................................................................ 113 C.1 Alignment Drawings: ........................................................................................... 113 C241-PBR-RT-DPL-01A-000001-PET001794................................................................... 113 C241-PBR-RT-DSE-01A-000001-PET001794 .................................................................. 113 C241-PBR-RT-DPL-01A-000002-PET001794................................................................... 113 C241-PBR-RT-DSE-01A-000003-PET001794 .................................................................. 113 Appendix D ............................................................................................................... 115 D.1 Portal locations ................................................................................................... 115 Appendix E ................................................................................................................ 117 E.1 Dive under structure ..........................................................................................