New Rock-Fracturing Excavation Method for Hard Rock Tunneling by FON Drill and FASE Method

Abstract

A new rock-fracturing excavation method for hard rock tunneling is developed using a slot made by continuous hole drilling and fracturing toward the slot using a rubber-tube-type fracturing machine. This paper gives an outline of the method of making a slot by continuous hole drilling, the fracturing machine and its system, and the actual tunnel excavating procedure.