THE RESULT OF CONSTRUCTION BY UMBRELLA METHOD UNDER DENSELY RESIDENTIAL AREA AND WATERCONTAINED UNSOLID GROUND

Abstract

The Nagata tunnel in Kobe city 2 nd highway line had been carried out by Umbrella Method. Because it was under densely residential area, shallow depth of cover and watercontained unsolid ground. In this report, it is mentioned regarding the selection of Umbrella method developed by the result of trial section, the behavior and consideration of long forepiling, the ground and sup-ports, and the simple prediction method of ground settlement evaluated by the measurement results.