Development of a Design Technology for Ground Support for Tunnels in Soil. Volume II: Three-Dimensional Finite Element Analysis of Advanced and Conventional Shield Tunneling

摘要

This volume presents a three dimensional finite element model that can be used to compare different soil tunneling procedures, and the ground movements that accompany tunnel construction. Parameter studies are described that demonstrate the benefits gained by continuous face support. Sections of this report provide: (1) a review of different shield techniques and the research work related to shield tunneling; (2) the finite element techniques developed to study the different shield techniques; (3) the parametric analyses purported to evolve rational modeling procedures for the different shield types; and (4) comparisons between shield types, and information on ground control processes applicable to the advance shields. The authors state that the three dimensional finite element program developed provides a useful tool to study and compare the shield tunneling techniques.