Some number of cases where concrete pieces of tunnel lining exfoliate are paid attention to as a social problem. Repair methods for them have been studied and experienced. However it is thought to contribute to the future durability and safety to minimize damage of cracks as small as possible in a construction stage before starting operation. In the squeezing ground in particular, the damage on lining is quite remarkable compared with the normal ground.
This paper aims at suggesting a method of design of lining by the following analysis. Firstly relationship between deformation of ground, stress within lining and damage of cracks on the basis of investigation on lining in squeezing ground is examined and secondly the multivariate analysis is done which makes possible to predict damage of cracks before placing the lining concrete.
