目　录

Foreword by Jun Sun

Foreword by Qihu Qian

Preface

1　Introduction

1.1　Development and Application of Large Diameter Underwater Shield Tunnel Technology

1.2　Common Technical Difficulties in Large Diameter Underwater Shield Tunnel Construction

1.3　Significance and Application Prospect of Underwater Shield Tunnel Construction Technology

2　Large Diameter Shield Initiation and Arrival Technique

2.1　Shield Initiation and Arrival Construction Method

2.1.1　Main Construction Methods of Shield Initial Stage

2.1.2　Construction Method of Shield Arrival

2.2　Strata Reinforcement at Initiation and Arrival Sites

2.2.1　Soil Precipitation Technology

2.2.2　Soil Reinforcement Method

2.2.3　Scope of Soil Reinforcement

2.3　Shield Tunneling Initial Construction Technology

2.3.1　Initial Construction of Auxiliary Engineering

2.3.2　Installation of Negative Loop Pipe and Box Culvert

2.3.3　Broken of the Door of Tunnel

2.3.4　Control of Driving Parameters in the Initial Section

2.4　Construction Technology of Shield Arrival

2.4.1　Installation and Construction of Receiving Pedestal

2.4.2　Breaking and Temporary Sealing of the Tunnel Door

2.4.3　The Arrival Section of the Shield Machine is Excavated

2.4.4　Control of Driving Parameters in the Arrival Section

3　The Key Technology of Large Diameter Shield Tunneling Shallow Overburden Construction

3.1　Analysis of Construction Difficulties of Large Diameter Shield Shallow Overburden

3.1.1　Technical Difficulties

3.1.2　The Present Situation of Technology

3.2　Construction Technology and Control Technology of Shallow Overburden for Shield Tunneling

3.2.1　Main Technical Measures of Shallow Overburden Construction

3.2.2　Driving Parameters and Gesture Control of Shallow Overburden Construction

3.2.3　Slurry Quality and Grouting Control After Wall in the Construction of Shallow Overburden

3.3　The Instability Mechanism of Slurry Splitting Excavation Face in Shield Shallow Overburden Excavation

3.3.1　Split Extension Phenomenon of Slurry

3.3.2　Model Test of Slurry Shield Excavation Mud Split

3.3.3　Determination of the Eruption of Slurry

3.3.4　Prevention and Control Measures of Slurry Split

3.4　Three-Dimensional Visualization and Simulation Technology of Shield Tunneling in Shallow Overburden

3.4.1　Summary of Engineering Problems

3.4.2　Finite Element Mode

3.4.3　Analysis of Calculation Results

4　The Key Technology of Large Diameter Shield Tunneling Through the Embankment

4.1　Surface Subsidence and Hazard Analysis of Shield Tunnels

4.1.1　The Analysis of the Causes and Processes of Formation Settlement Caused by the Construction of Shields

4.1.2　The Hazard of Shield Construction to the Surface Structure

4.2　Study on the Effects of Large Diameter Shield Crossing on Embankment Subsidence and Stability

4.2.1　An Overview of the Project of the Three-Way River Channel in Nanjing and the Geological Conditions of the Embankment Section

4.2.2　Calculation Model and Parameters

4.2.3　Calculation Results Analysis

4.2.4　Analysis of the Value of Stress Field and Mud Water Pressure on Embankment

4.3　Shield Through Embankment Construction Control Technology

4.3.1　Control of Excavation Parameters

4.3.2　Post-wall Pulp Management

4.3.3　Mud Management

4.4　Embankment Deformation Monitoring and Reinforcement Technology

4.4.1　Monitoring of Embankment Deformation

4.4.2　Embankment Reinforcement Technology

5　Technology of Slurry Shield Crossing High Infiltration Induced Gravel Composite Stratum in River

5.1　High Permeability Water-Rich Gravel Composite Stratum Excavation Problem

5.1.1　Technical Problem

5.1.2　Research Status

5.2　Slurry Preparation and Film Forming Technology of High Permeability Sand—Gravel Composite Formation

5.2.1　Mud Material Composition and Basic Properties

5.2.2　Mud Preparation Technology

5.2.3　Film Formation Law of High Permeability Formation Mud

5.3　Calculation and Analysis of the Mud Circulation and Slag Carrying Capacity of Gravel Formation

5.3.1　Material Balance Calculation and Screening Effect Analysis of Two Typical Sand Strata

5.3.2　Calculation and Analysis of Carrying Capacity of Drain Pipe

6　Long-Distance Tunneling of Shields and Replacement of Cutting Tools in the River

6.1　Shield Gravel Formation Long Distance Boring Tool Replacement Technology

6.1.1　Shield Tool Type and Cutting Principle

6.1.2　Analysis of Geological Adaptability Design of Cutterhead and Cutter

6.1.3　Field Excavation Test Study

6.1.4　Tool Cutter Wear and Its Influencing Factors

6.2　Shield Fault and Detection Technology

6.2.1　Shield Tunnel Common Faults and Maintenance

6.2.2　Shield State Monitoring and Fault Diagnosis Technology Based on Virtual Instrument Technology

6.2.3　Shield Fault Diagnosis Technology and Application Based on Oil Analysis

6.3　Replacement Technology of Pressured Cutter in Shield River

6.3.1　Technical Difficulties in Cutter Replacement of Shield Machine with Pressurized Inlet Cabin

6.3.2　Pressured Inlet Technology Based on Mud Film Closed Air

6.3.3　Replacement Technology of Shield Cutter Under Pressure

7　Construction Technology of Shield Tunnel Crossing the Middle Channel Section of Yangtze River

7.1　Technical Difficulties and Schemes for Shield Tunneling Through River Channel

7.1.1　Technical Difficulties

7.1.2　Crossing Scheme

7.2　Stability Analysis of Excavation Face and Calculation of Excavation Parameters Passing Through the Middle Channel

7.2.1　Stability Analysis of Excavation Face

7.2.2　Calculation of Tunneling Parameters

7.2.3　Selection of Shield Construction Parameters and Numerical Calculation Examples

7.3　Study on Slurry Ratio and Film Formation of Shield Tunneling Across the Middle of Yangtze River

7.3.1　Experimental Study on Slurry Ratio and Film Formation of Fine Sand Stratum in the Channel Section

7.3.2　Determination of Mud Ratio and Index During Construction of Trench Section

7.4　Shield Attitude Control and Risk Management Technology for Shield Crossing the Middle Channel Section of Yangtze River

7.4.1　Shield Attitude Control in Shield Tunnel Construction

7.4.2　Float Control and Treatment Measures

7.4.3　Construction Risk Analysis and Countermeasures of River Channel Section

References