| Abstract | 第5-6页 |
| Chapter 1: Introduction | 第14-34页 |
| 1.1 Background of the study | 第14-15页 |
| 1.2 Review of the literatures | 第15-29页 |
| 1.2.1 Scale effect on rock mass mechanical properties | 第15-16页 |
| 1.2.2 Rock mass stability problems related to the transition of open-pit mining to underground mining | 第16-17页 |
| 1.2.3 Different approaches to evaluate the fractured rock mass behavior in mining area | 第17-26页 |
| 1.2.3.1 Empirical approaches to predict the mining induced rock mass movement | 第18-19页 |
| 1.2.3.2 Numerical Approach to predict the mining induced rock mass movement | 第19-26页 |
| 1.2.3.2.1 Continuous numerical approach to simulate mining induced rock movement | 第20-23页 |
| 1.2.3.2.2 Discontinuous Numerical approach to simulate mining induced rock mass movement | 第23-26页 |
| 1.2.4 Challenges in numerical modeling of rock mass | 第26-29页 |
| 1.2.4.1 Challenges come from rock mass complexity | 第26-28页 |
| 1.2.4.2 Challenges from modeling capability | 第28-29页 |
| 1.3 Highlight of the proposed Equivalent Discontinuous Modeling Method (EDMM) | 第29-31页 |
| 1.3.1 Features of the proposed EDM | 第29-30页 |
| 1.3.2 Modeling procedures of the proposed EDM | 第30-31页 |
| 1.3.3 Way of determining the joint mechanical properties of the proposed EDM | 第31页 |
| 1.4 Statement of the problem | 第31页 |
| 1.5 Objectives of the study | 第31-32页 |
| 1.6 The structures of the thesis | 第32-34页 |
| Chapter 2: Features of Rock Movements Induced by Mining Under Open-pit Final Slope | 第34-43页 |
| 2.1 General | 第34-35页 |
| 2.2 Caving of the goaf overlaying rock mass | 第35-37页 |
| 2.3 Surface subsidence | 第37-40页 |
| 2.4 Movement of the goaf side walls | 第40页 |
| 2.5 Movement and failure of open-pit slope | 第40-41页 |
| 2.6 Ground fissures | 第41-43页 |
| Chapter 3: Determining Representative Elementary Volume (REV) of (EDCMs) | 第43-53页 |
| 3.1 General | 第43-44页 |
| 3.2 Building Equivalent Discontinuous Cube Models (EDCMs) | 第44-45页 |
| 3.3 Intensive numerical simulation of EDCMs | 第45-46页 |
| 3.4 Analyzing the simulation results and determines the Elastic moduli (E &v) of EDCMs | 第46-48页 |
| 3.5 Building the relationship between elastic moduli and model sizes and determine REV sizes for different joint spacing | 第48-53页 |
| Chapter 4: Equivalent Discontinuous Modeling of Fractured Rock Mass | 第53-73页 |
| 4.1 General | 第53-54页 |
| 4.2 Determining Joint Mechanical Properties of EDM of the study area | 第54-73页 |
| 4.2.1 Building Equivalent Discontinuous Cube Models (EDCMs) for each sub-area of the project domain | 第55-57页 |
| 4.2.2 Determining the initial properties of rock mass | 第57-58页 |
| 4.2.3 Inverting the joint mechanical properties of each EDCMs | 第58-69页 |
| 4.2.3.1 Determining benchmark strengths of EDCMs based on Equivalent Continuous Modeling Method (ECMM) | 第59-62页 |
| 4.2.3.2 Selecting the appropriate controlling factors’ levels and determine their orthogonal experimental Scheme | 第62-63页 |
| 4.2.3.3 Intensive numerical simulation of each EDCM based on the above designed orthogonal scheme | 第63-65页 |
| 4.2.3.4 Analyzing orthogonal experimental results to determine the joint mechanical properties of each EDCM | 第65-69页 |
| 4.2.4 Building the relationship between joint spacing and joint mechanical parameters | 第69-73页 |
| Chapter 5: Case Study Ⅰ | 第73-94页 |
| 5.1 General | 第73页 |
| 5.2 Geology and geological structures of the mining area | 第73-76页 |
| 5.3 Mining background of the Yanqianshan iron mine | 第76-80页 |
| 5.3.1 Current situation of the western open pit slope and underground mining areas | 第77-80页 |
| 5.4 Numerical simulation of EDM of the western final slope of the mining area | 第80-94页 |
| 5.4.1 Building Equivalent Discontinuous Model (EDM) of the study area | 第80-82页 |
| 5.4.2 Determining joint mechanical parameters of each subarea of the EDM | 第82页 |
| 5.4.3 Conduct numerical calculation of EDM of the study area | 第82-83页 |
| 5.4.4 Analyzing the pattern of rock mass movement and failure mechanisms of EDM | 第83-94页 |
| 5.4.4.1 Pattern of rock mass movement and failure condition after mining layer 1 | 第84-86页 |
| 5.4.4.2 Pattern of rock mass movement and failure condition after mining layer 2 | 第86页 |
| 5.4.4.3 Pattern of rock mass movement and failure condition after mining layer 3 | 第86-87页 |
| 5.4.4.4 Pattern of rock mass movement and failure condition after mining layer 4 | 第87-90页 |
| 5.4.4.5 Pattern of rock mass movement and failure condition after mining layer 5 | 第90-94页 |
| Chapter 6: Case Study Ⅱ | 第94-115页 |
| 6.1 General | 第94页 |
| 6.2 Building the EDM of the open pit slope | 第94-96页 |
| 6.3 Determining joint mechanical parameters of EDM of open pit slope | 第96-104页 |
| 6.3.1 Building Equivalent Discontinuous Cube Models (EDCMs) with deformable intact rocks | 第97-98页 |
| 6.3.2 Intensive numerical simulation of the developed EDCMs | 第98-101页 |
| 6.3.3 Analyzing the simulation results and determines the joint mechanical properties of each EDCM | 第101-102页 |
| 6.3.4 Building the relationship between joint spacing and joint mechanical parameters | 第102-104页 |
| 6.4 Numerical simulation of EDM to determine slope factors of safety (FOS) through strength reduction method (SRM) | 第104-105页 |
| 6.5 Condition of the slope failure based on this numerical simulation result | 第105-109页 |
| 6.6 Numerical simulation based on ECM to determine slope factors of safety (FOS) through strength reduction factor (SRM) method | 第109-114页 |
| 6.7 Summary of the simulation results on the open pit slope stability condition | 第114-115页 |
| Chapter 7: Discussion and Conclusion | 第115-123页 |
| 7.1 Discussion | 第115-120页 |
| 7.2 Limitations and uncertainties | 第120页 |
| 7.3 Conclusion | 第120-123页 |
| Acknowledgements | 第123-124页 |
| References | 第124-131页 |
