APPLICATION OF THE NEW PRE-LINING SUPPORT METHOD TO A TUNNELLING WORK

Abstract

Pre-lining methods are recently taken notice of as new type of tunnel construction methods. The New PLS (New Pre-lining Support) Method is one of pre-lining methods, in which the perimeter of the tunnel face is excavated with a chain cutter, and immediately reinforced with a concrete shell. The method was applied to a three-lane tunnel construction after some tests and trial works.
This paper outlines the New Pre-lining Support Method and describes the effectiveness and workability of the method through the tunnelling work.