Shotcrete repairs to the fire-damaged segmental concrete lining in the northbound running tube of the Channel Tunnel, nearest the French coast, are expected to be completed by early January, slightly ahead of programme.
The worst damage in “Interval 6” is over a 550m long section out of 650m to be repaired, and shotcreting is advancing more than 20m/day. Following hydrodemolition work on the damaged lining, the shotcreting began early this month.
Working from a long scaffold system, contractor Freyssinet is tackling multiple faces. Work is being supervised by SETEC (T&TI, October, p7). Following the structural repairs the client, Eurotunnel, aims to have the new track, cabling and catenary installed and the tunnel back in service by mid-February. The repairs are to cost less than US$76M.
Repairs underway
