CONTENTS 1.Introduction 2.Open Excavation 3.Conventional Tunneling 4.Mechanical Tunneling 5.Immersed Tube Tunnel Method 6.Shafts Construction 7.Conclusion 百年同濟2 TONGILUNIVERSITY
2 1. Introduction 2. Open Excavation 3. Conventional Tunneling 4. Mechanical Tunneling 5. Immersed Tube Tunnel Method 6. Shafts Construction 7. Conclusion CONTENTS
1.Introduction General Trends in the Underground Industry High risk type construction methods Trend towards design build (D&B)contracts Tight construction schedules Low financial budgets Fierce competition in construction industries 百年同濟3
3 General Trends in the Underground Industry High risk type construction methods Trend towards design + build (D&B) contracts Tight construction schedules Low financial budgets Fierce competition in construction industries 1. Introduction
1.Introduction Shallow Overburden (Sauer Mergelsberg,2003) 百年问濟 4 TONGILUNIVERSITY
4 Shallow Overburden K < K 0 cr MODO I (K <1) 0 K > Kcr 0 0 0 K < K 0 cr MODO I (K <1) 0 K > Kcr 0 0 0 (Sauer & Mergelsberg, 2003) 1. Introduction
1.Introduction Restricted environment Mixshield Zurich/CH (diameter:12,33 m) 百年同濟5
5 Mixshield Zürich/CH (diameter: 12,33 m) 1. Introduction Restricted environment
Deep depth 42m Water Pressure up to 6 bar
6 Water Pressure up to 6 bar 42m Deep depth