Part Reconstruction of Bo-Peep Tunnel at St Leonards-on-Sea. Railway Paper No 40. (Includes Plates).

Tunnelling

“…Remedial work may entail the provision of a new invert in short lengths accompanied by temporary propping between the footings. The Bopeep Tunnel (Campion 1967) provides an example of a tunnel collapse when such remedial work was not undertaken in time, leading to a parallel-sided block failure extending to the ground surface.…”