Many arguments have been made on the countermeasures of cracks of inner lining in urban-NATM tunnel, but there are many uncertain points on the selection of countermeasures to prevent cracks at present stage. The purpose of the present investigation is to examine the practical method for selection of the countermeasures on the basis of experimental data on site.
As a results, we wish to propose a selection method of countermeasures by means of actual data obtained through site.