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Channel Tunnel Rail Link, Contract 330: Pepper Hill Tunnel
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| Service: | Detailed Temporary and Permanent Lining Design, Settlement Assessment and Construction Supervision.
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| Estimated cost: | Commencement: | December 31, 1996
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Completion date: | December 30, 1997
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| Location: | Kent |
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| Technical data: | Approximately 14 m span twin track railway tunnel. Approximately 200m long. Using doorframe slab method. |
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| Geology description: | Superficial soil deposits, highly weathered Chalk and intact weak rock Chalk. |
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Description
Rapid excavation of shallow cut (2m) for slab placement. Safe tunneling beneath operational highway. Minimal disruption to traffic