Simulation of H&V Shield Behavior at Sharp Curve by Kinematic Shield Model

Abstract

Due to the restrictions of underground space use, the horizontal and vertical variation shield method (H&V shield) was innovated, of which the cross section is changed from horizontal multi-circular shape to vertical one or vice versa. However, this method has never been applied in practice. Therefore, this study aims to examine the H&V shield control method, using the developed kinematic shield model for the H&V shield. As a result, the following were found: 1) the calculated shield behavior has an overall good agreement with the planned one; 2) the ground displacement is a predominant factor affecting shield behavior; and 3) the proposed model can simulate the H&V shield behavior reasonably.