Abstract
The lining concrete was a main support member in an ordinary tunneling method, but, in NATM, it is not to support external pressure except a special ground condition showing squeezing. Therefore, as long as the condition is satisfactory, lining concrete is omitted, and a big economic effect occurs. For abbreviation of lining concrete, shotcrete was evaluated as a temporary structure conventionally, but convenient and certain technique to evaluate it as a permanent structure is necessary.
In this study, we suggest the technique and a method that shotcrete is evaluated as a permanent structure using field measurement of daily management.
And we apply the method to Shinkansen section and show specific coverage.
