A RATIONAL DESIGN OF TUNNEL SUPPORT OF THE 2ND STAGE TUNNEL BASED ON THE 1ST STAGE TUNNEL CONSTRUCTION RECORDS

Abstract

In order to perform a rational tunnel design at second tunnel of parallel tunnels, it is strongly required to improve a tunnel design methodology. The case study of the parallel tunnels shows that this methodology has not yet been established. This paper deals with the rational tunnel design methodology of the second tunnel based on the first tunnel construction data by comparison each tunnel of the parallel tunnel construction data. An application of the methodology shows that the lighter support scale may be used for the second tunnel by carrying out the informational procedure to perform the realization of the rational tunnel construction.