Treatment technology of fault zone and its application in tunnel excavation

This paper introduces the treatment technology of faults encountered during tunneling in the Putian water diversion Project. Particular measures such as consolidation of earth mass and support in advance have been taken before the commencement of excavation in order to keep the fault zone in a steady condition while tunneling. Safety construction was successfully guaranteed, and the approaches adopted are recommendable to various geological conditions which may cause difficulty to earth tunnel construction.