1.Introduction 1.4 Design Documents Geo-mechanical model Structural model of the tunnel Assumptions,completeness and type of calculations and simulations Monitoring threshold values Design Reviewer 百年同海10 TONGILUNIVERSITY 10 1.4 Design Documents  Geo- mechanical model  Structural model of the tunnel  Assumptions, completeness and type of calculations and simulations  Monitoring  threshold values  Design Reviewer 1. Introduction