PRACTICAL APPLICATION OF A THEORETICAL EQUATION DERIVED FOR REPRESENTING WATER STOPPING MECHANISM OF EARTH PRESSURE BALANCED SHIELDS SUBJECT TO HIGH MATER PRESSURE

Abstract

This paper presents the verification of a theoretical equation proposed by the authors on water stopping mechanism of earth pressure balanced shields subuject to high water pressure.
Compararison of theoreticaly predicted phenomenon with practical one obtained from shield excavations, and the investigation from trial result of theoretical equation using the data of shield machine has been conducted. The results revealed that the proposed theoretical equation well represents a practical applicability.
And it has became clear that the equation has a sufficient validity in designing shield machine for practical purpose.